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Finding the Fourth Proportional to 415,550.80, 623,326.20 and 135,096.40

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Solution

The fourth proportional to 415,550.80, 623,326.20 and 135,096.40 is: 202,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,550.80 : 623,326.20 = 135,096.40 : x
  2. Step 2: Convert to fraction form
    415,550.80/623,326.20 = 135,096.40/x
  3. Step 3: Cross multiply
    415,550.80x = 623,326.20 × 135,096.40
  4. Step 4: Simplify right side
    415,550.80x = 84,209,125,645.68
  5. Step 5: Solve for x
    x = 84,209,125,645.68/415,550.80
  6. Step 6: Final answer
    x = 202,644.60

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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.