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Finding the Fourth Proportional to 487,188.56, 672,308.34 and 272,353.88

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Solution

The fourth proportional to 487,188.56, 672,308.34 and 272,353.88 is: 375,841.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,188.56 : 672,308.34 = 272,353.88 : x
  2. Step 2: Convert to fraction form
    487,188.56/672,308.34 = 272,353.88/x
  3. Step 3: Cross multiply
    487,188.56x = 672,308.34 × 272,353.88
  4. Step 4: Simplify right side
    487,188.56x = 183,105,781,593.82
  5. Step 5: Solve for x
    x = 183,105,781,593.82/487,188.56
  6. Step 6: Final answer
    x = 375,841.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.