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Finding the Fourth Proportional to 487,191.56, 672,312.48 and 272,356.88

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Solution

The fourth proportional to 487,191.56, 672,312.48 and 272,356.88 is: 375,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,191.56 : 672,312.48 = 272,356.88 : x
  2. Step 2: Convert to fraction form
    487,191.56/672,312.48 = 272,356.88/x
  3. Step 3: Cross multiply
    487,191.56x = 672,312.48 × 272,356.88
  4. Step 4: Simplify right side
    487,191.56x = 183,108,926,076.30
  5. Step 5: Solve for x
    x = 183,108,926,076.30/487,191.56
  6. Step 6: Final answer
    x = 375,845.85

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1.5x scale

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.