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Finding the Fourth Proportional to 476,715.05, 657,703.82 and 272,691.64

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Solution

The fourth proportional to 476,715.05, 657,703.82 and 272,691.64 is: 376,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,715.05 : 657,703.82 = 272,691.64 : x
  2. Step 2: Convert to fraction form
    476,715.05/657,703.82 = 272,691.64/x
  3. Step 3: Cross multiply
    476,715.05x = 657,703.82 × 272,691.64
  4. Step 4: Simplify right side
    476,715.05x = 179,350,328,658.09
  5. Step 5: Solve for x
    x = 179,350,328,658.09/476,715.05
  6. Step 6: Final answer
    x = 376,221.25

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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.