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Finding the Fourth Proportional to 487,212.40, 730,801.60 and 171,662.32

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Solution

The fourth proportional to 487,212.40, 730,801.60 and 171,662.32 is: 257,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,212.40 : 730,801.60 = 171,662.32 : x
  2. Step 2: Convert to fraction form
    487,212.40/730,801.60 = 171,662.32/x
  3. Step 3: Cross multiply
    487,212.40x = 730,801.60 × 171,662.32
  4. Step 4: Simplify right side
    487,212.40x = 125,451,098,115.71
  5. Step 5: Solve for x
    x = 125,451,098,115.71/487,212.40
  6. Step 6: Final answer
    x = 257,487.49

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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.