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Finding the Fourth Proportional to 391,497, 587,248.97 and 154,839.71

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Solution

The fourth proportional to 391,497, 587,248.97 and 154,839.71 is: 232,260.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,497 : 587,248.97 = 154,839.71 : x
  2. Step 2: Convert to fraction form
    391,497/587,248.97 = 154,839.71/x
  3. Step 3: Cross multiply
    391,497x = 587,248.97 × 154,839.71
  4. Step 4: Simplify right side
    391,497x = 90,929,460,212.60
  5. Step 5: Solve for x
    x = 90,929,460,212.60/391,497
  6. Step 6: Final answer
    x = 232,260.94

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1.5x scale

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.