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Finding the Fourth Proportional to 487,549.43, 672,813.24 and 272,688.98

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Solution

The fourth proportional to 487,549.43, 672,813.24 and 272,688.98 is: 376,308.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,549.43 : 672,813.24 = 272,688.98 : x
  2. Step 2: Convert to fraction form
    487,549.43/672,813.24 = 272,688.98/x
  3. Step 3: Cross multiply
    487,549.43x = 672,813.24 × 272,688.98
  4. Step 4: Simplify right side
    487,549.43x = 183,468,755,544.02
  5. Step 5: Solve for x
    x = 183,468,755,544.02/487,549.43
  6. Step 6: Final answer
    x = 376,308.01

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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.