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Finding the Fourth Proportional to 256,670.52, 384,685.02 and 123,515.03

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Solution

The fourth proportional to 256,670.52, 384,685.02 and 123,515.03 is: 185,118.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,670.52 : 384,685.02 = 123,515.03 : x
  2. Step 2: Convert to fraction form
    256,670.52/384,685.02 = 123,515.03/x
  3. Step 3: Cross multiply
    256,670.52x = 384,685.02 × 123,515.03
  4. Step 4: Simplify right side
    256,670.52x = 47,514,379,862.43
  5. Step 5: Solve for x
    x = 47,514,379,862.43/256,670.52
  6. Step 6: Final answer
    x = 185,118.18

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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.