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Finding the Fourth Proportional to 253,865.97, 380,798.96 and 129,294.45

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Solution

The fourth proportional to 253,865.97, 380,798.96 and 129,294.45 is: 193,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,865.97 : 380,798.96 = 129,294.45 : x
  2. Step 2: Convert to fraction form
    253,865.97/380,798.96 = 129,294.45/x
  3. Step 3: Cross multiply
    253,865.97x = 380,798.96 × 129,294.45
  4. Step 4: Simplify right side
    253,865.97x = 49,235,191,447.30
  5. Step 5: Solve for x
    x = 49,235,191,447.30/253,865.97
  6. Step 6: Final answer
    x = 193,941.68

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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.