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Finding the Fourth Proportional to 447,013.68, 671,176.62 and 279,248.91

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Solution

The fourth proportional to 447,013.68, 671,176.62 and 279,248.91 is: 419,283.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,013.68 : 671,176.62 = 279,248.91 : x
  2. Step 2: Convert to fraction form
    447,013.68/671,176.62 = 279,248.91/x
  3. Step 3: Cross multiply
    447,013.68x = 671,176.62 × 279,248.91
  4. Step 4: Simplify right side
    447,013.68x = 187,425,339,552.48
  5. Step 5: Solve for x
    x = 187,425,339,552.48/447,013.68
  6. Step 6: Final answer
    x = 419,283.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.