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Finding the Fourth Proportional to 256,901.91, 385,343.64 and 67,360.83

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Solution

The fourth proportional to 256,901.91, 385,343.64 and 67,360.83 is: 101,038.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,901.91 : 385,343.64 = 67,360.83 : x
  2. Step 2: Convert to fraction form
    256,901.91/385,343.64 = 67,360.83/x
  3. Step 3: Cross multiply
    256,901.91x = 385,343.64 × 67,360.83
  4. Step 4: Simplify right side
    256,901.91x = 25,957,067,425.62
  5. Step 5: Solve for x
    x = 25,957,067,425.62/256,901.91
  6. Step 6: Final answer
    x = 101,038.83

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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.