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Finding the Fourth Proportional to 165,658.60, 248,487.90 and 40,999.60

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Solution

The fourth proportional to 165,658.60, 248,487.90 and 40,999.60 is: 61,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,658.60 : 248,487.90 = 40,999.60 : x
  2. Step 2: Convert to fraction form
    165,658.60/248,487.90 = 40,999.60/x
  3. Step 3: Cross multiply
    165,658.60x = 248,487.90 × 40,999.60
  4. Step 4: Simplify right side
    165,658.60x = 10,187,904,504.84
  5. Step 5: Solve for x
    x = 10,187,904,504.84/165,658.60
  6. Step 6: Final answer
    x = 61,499.40

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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.