Home / 391,150.13-539,787.20-212,302.13

Finding the Fourth Proportional to 391,150.13, 539,787.20 and 212,302.13

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Solution

The fourth proportional to 391,150.13, 539,787.20 and 212,302.13 is: 292,976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,150.13 : 539,787.20 = 212,302.13 : x
  2. Step 2: Convert to fraction form
    391,150.13/539,787.20 = 212,302.13/x
  3. Step 3: Cross multiply
    391,150.13x = 539,787.20 × 212,302.13
  4. Step 4: Simplify right side
    391,150.13x = 114,597,968,546.29
  5. Step 5: Solve for x
    x = 114,597,968,546.29/391,150.13
  6. Step 6: Final answer
    x = 292,976.94

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1.5x scale

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.