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Finding the Fourth Proportional to 256,969.66, 385,233.18 and 123,666.52

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Solution

The fourth proportional to 256,969.66, 385,233.18 and 123,666.52 is: 185,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,969.66 : 385,233.18 = 123,666.52 : x
  2. Step 2: Convert to fraction form
    256,969.66/385,233.18 = 123,666.52/x
  3. Step 3: Cross multiply
    256,969.66x = 385,233.18 × 123,666.52
  4. Step 4: Simplify right side
    256,969.66x = 47,640,446,759.13
  5. Step 5: Solve for x
    x = 47,640,446,759.13/256,969.66
  6. Step 6: Final answer
    x = 185,393.27

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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.