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Finding the Fourth Proportional to 661,010.90, 991,516.35 and 162,374.90

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Solution

The fourth proportional to 661,010.90, 991,516.35 and 162,374.90 is: 243,562.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,010.90 : 991,516.35 = 162,374.90 : x
  2. Step 2: Convert to fraction form
    661,010.90/991,516.35 = 162,374.90/x
  3. Step 3: Cross multiply
    661,010.90x = 991,516.35 × 162,374.90
  4. Step 4: Simplify right side
    661,010.90x = 160,997,368,179.62
  5. Step 5: Solve for x
    x = 160,997,368,179.62/661,010.90
  6. Step 6: Final answer
    x = 243,562.35

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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.