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Finding the Fourth Proportional to 487,629.76, 730,780.26 and 234,891.88

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Solution

The fourth proportional to 487,629.76, 730,780.26 and 234,891.88 is: 352,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,629.76 : 730,780.26 = 234,891.88 : x
  2. Step 2: Convert to fraction form
    487,629.76/730,780.26 = 234,891.88/x
  3. Step 3: Cross multiply
    487,629.76x = 730,780.26 × 234,891.88
  4. Step 4: Simplify right side
    487,629.76x = 171,654,349,138.29
  5. Step 5: Solve for x
    x = 171,654,349,138.29/487,629.76
  6. Step 6: Final answer
    x = 352,017.79

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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.