Home / 385,200.13-578,062.65-135,882.13

Finding the Fourth Proportional to 385,200.13, 578,062.65 and 135,882.13

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Solution

The fourth proportional to 385,200.13, 578,062.65 and 135,882.13 is: 203,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,200.13 : 578,062.65 = 135,882.13 : x
  2. Step 2: Convert to fraction form
    385,200.13/578,062.65 = 135,882.13/x
  3. Step 3: Cross multiply
    385,200.13x = 578,062.65 × 135,882.13
  4. Step 4: Simplify right side
    385,200.13x = 78,548,384,155.44
  5. Step 5: Solve for x
    x = 78,548,384,155.44/385,200.13
  6. Step 6: Final answer
    x = 203,915.78

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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.