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Finding the Fourth Proportional to 376,528, 519,654.72 and 217,552

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Solution

The fourth proportional to 376,528, 519,654.72 and 217,552 is: 300,248.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,528 : 519,654.72 = 217,552 : x
  2. Step 2: Convert to fraction form
    376,528/519,654.72 = 217,552/x
  3. Step 3: Cross multiply
    376,528x = 519,654.72 × 217,552
  4. Step 4: Simplify right side
    376,528x = 113,051,923,645.44
  5. Step 5: Solve for x
    x = 113,051,923,645.44/376,528
  6. Step 6: Final answer
    x = 300,248.38

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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.