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Finding the Fourth Proportional to 487,614.87, 672,964.34 and 272,809.35

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Solution

The fourth proportional to 487,614.87, 672,964.34 and 272,809.35 is: 376,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,614.87 : 672,964.34 = 272,809.35 : x
  2. Step 2: Convert to fraction form
    487,614.87/672,964.34 = 272,809.35/x
  3. Step 3: Cross multiply
    487,614.87x = 672,964.34 × 272,809.35
  4. Step 4: Simplify right side
    487,614.87x = 183,590,962,804.53
  5. Step 5: Solve for x
    x = 183,590,962,804.53/487,614.87
  6. Step 6: Final answer
    x = 376,508.13

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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.