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Finding the Fourth Proportional to 391,073.52, 586,590.84 and 213,926.52

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Solution

The fourth proportional to 391,073.52, 586,590.84 and 213,926.52 is: 320,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,073.52 : 586,590.84 = 213,926.52 : x
  2. Step 2: Convert to fraction form
    391,073.52/586,590.84 = 213,926.52/x
  3. Step 3: Cross multiply
    391,073.52x = 586,590.84 × 213,926.52
  4. Step 4: Simplify right side
    391,073.52x = 125,487,337,065.08
  5. Step 5: Solve for x
    x = 125,487,337,065.08/391,073.52
  6. Step 6: Final answer
    x = 320,879.15

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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.