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Finding the Fourth Proportional to 256,670.97, 384,425.07 and 123,646.69

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Solution

The fourth proportional to 256,670.97, 384,425.07 and 123,646.69 is: 185,189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,670.97 : 384,425.07 = 123,646.69 : x
  2. Step 2: Convert to fraction form
    256,670.97/384,425.07 = 123,646.69/x
  3. Step 3: Cross multiply
    256,670.97x = 384,425.07 × 123,646.69
  4. Step 4: Simplify right side
    256,670.97x = 47,532,887,458.52
  5. Step 5: Solve for x
    x = 47,532,887,458.52/256,670.97
  6. Step 6: Final answer
    x = 185,189.96

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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.