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Finding the Fourth Proportional to 385,263.45, 577,751.49 and 132,472.44

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Solution

The fourth proportional to 385,263.45, 577,751.49 and 132,472.44 is: 198,659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,263.45 : 577,751.49 = 132,472.44 : x
  2. Step 2: Convert to fraction form
    385,263.45/577,751.49 = 132,472.44/x
  3. Step 3: Cross multiply
    385,263.45x = 577,751.49 × 132,472.44
  4. Step 4: Simplify right side
    385,263.45x = 76,536,149,593.94
  5. Step 5: Solve for x
    x = 76,536,149,593.94/385,263.45
  6. Step 6: Final answer
    x = 198,659.25

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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.