Home / 385,257.10-577,887.45-135,939.10

Finding the Fourth Proportional to 385,257.10, 577,887.45 and 135,939.10

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Solution

The fourth proportional to 385,257.10, 577,887.45 and 135,939.10 is: 203,909.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,257.10 : 577,887.45 = 135,939.10 : x
  2. Step 2: Convert to fraction form
    385,257.10/577,887.45 = 135,939.10/x
  3. Step 3: Cross multiply
    385,257.10x = 577,887.45 × 135,939.10
  4. Step 4: Simplify right side
    385,257.10x = 78,557,499,854.30
  5. Step 5: Solve for x
    x = 78,557,499,854.30/385,257.10
  6. Step 6: Final answer
    x = 203,909.29

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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.