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Finding the Fourth Proportional to 418,394.65, 577,396.79 and 237,100.55

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Solution

The fourth proportional to 418,394.65, 577,396.79 and 237,100.55 is: 327,205.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,394.65 : 577,396.79 = 237,100.55 : x
  2. Step 2: Convert to fraction form
    418,394.65/577,396.79 = 237,100.55/x
  3. Step 3: Cross multiply
    418,394.65x = 577,396.79 × 237,100.55
  4. Step 4: Simplify right side
    418,394.65x = 136,901,092,404.75
  5. Step 5: Solve for x
    x = 136,901,092,404.75/418,394.65
  6. Step 6: Final answer
    x = 327,205.65

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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.