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Finding the Fourth Proportional to 487,459, 672,687.75 and 272,597.05

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Solution

The fourth proportional to 487,459, 672,687.75 and 272,597.05 is: 376,180.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,459 : 672,687.75 = 272,597.05 : x
  2. Step 2: Convert to fraction form
    487,459/672,687.75 = 272,597.05/x
  3. Step 3: Cross multiply
    487,459x = 672,687.75 × 272,597.05
  4. Step 4: Simplify right side
    487,459x = 183,372,696,221.14
  5. Step 5: Solve for x
    x = 183,372,696,221.14/487,459
  6. Step 6: Final answer
    x = 376,180.76

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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.