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Finding the Fourth Proportional to 256,218.68, 384,230.10 and 123,061.88

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Solution

The fourth proportional to 256,218.68, 384,230.10 and 123,061.88 is: 184,545.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,218.68 : 384,230.10 = 123,061.88 : x
  2. Step 2: Convert to fraction form
    256,218.68/384,230.10 = 123,061.88/x
  3. Step 3: Cross multiply
    256,218.68x = 384,230.10 × 123,061.88
  4. Step 4: Simplify right side
    256,218.68x = 47,284,078,458.59
  5. Step 5: Solve for x
    x = 47,284,078,458.59/256,218.68
  6. Step 6: Final answer
    x = 184,545.79

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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.