Home / 257,856.40-385,691.10-231,393.70

Finding the Fourth Proportional to 257,856.40, 385,691.10 and 231,393.70

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Solution

The fourth proportional to 257,856.40, 385,691.10 and 231,393.70 is: 346,109.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,856.40 : 385,691.10 = 231,393.70 : x
  2. Step 2: Convert to fraction form
    257,856.40/385,691.10 = 231,393.70/x
  3. Step 3: Cross multiply
    257,856.40x = 385,691.10 × 231,393.70
  4. Step 4: Simplify right side
    257,856.40x = 89,246,490,686.07
  5. Step 5: Solve for x
    x = 89,246,490,686.07/257,856.40
  6. Step 6: Final answer
    x = 346,109.27

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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.