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Finding the Fourth Proportional to 391,251.88, 539,929.84 and 230,113.72

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Solution

The fourth proportional to 391,251.88, 539,929.84 and 230,113.72 is: 317,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,251.88 : 539,929.84 = 230,113.72 : x
  2. Step 2: Convert to fraction form
    391,251.88/539,929.84 = 230,113.72/x
  3. Step 3: Cross multiply
    391,251.88x = 539,929.84 × 230,113.72
  4. Step 4: Simplify right side
    391,251.88x = 124,245,264,021.41
  5. Step 5: Solve for x
    x = 124,245,264,021.41/391,251.88
  6. Step 6: Final answer
    x = 317,558.25

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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.