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Finding the Fourth Proportional to 487,039.80, 730,214.10 and 187,404.60

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Solution

The fourth proportional to 487,039.80, 730,214.10 and 187,404.60 is: 280,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,039.80 : 730,214.10 = 187,404.60 : x
  2. Step 2: Convert to fraction form
    487,039.80/730,214.10 = 187,404.60/x
  3. Step 3: Cross multiply
    487,039.80x = 730,214.10 × 187,404.60
  4. Step 4: Simplify right side
    487,039.80x = 136,845,481,324.86
  5. Step 5: Solve for x
    x = 136,845,481,324.86/487,039.80
  6. Step 6: Final answer
    x = 280,973.92

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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.