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Finding the Fourth Proportional to 661,271.60, 991,907.40 and 162,635.60

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Solution

The fourth proportional to 661,271.60, 991,907.40 and 162,635.60 is: 243,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,271.60 : 991,907.40 = 162,635.60 : x
  2. Step 2: Convert to fraction form
    661,271.60/991,907.40 = 162,635.60/x
  3. Step 3: Cross multiply
    661,271.60x = 991,907.40 × 162,635.60
  4. Step 4: Simplify right side
    661,271.60x = 161,319,455,143.44
  5. Step 5: Solve for x
    x = 161,319,455,143.44/661,271.60
  6. Step 6: Final answer
    x = 243,953.40

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.