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Finding the Fourth Proportional to 384,687.80, 577,031.70 and 100,377.80

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Solution

The fourth proportional to 384,687.80, 577,031.70 and 100,377.80 is: 150,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,687.80 : 577,031.70 = 100,377.80 : x
  2. Step 2: Convert to fraction form
    384,687.80/577,031.70 = 100,377.80/x
  3. Step 3: Cross multiply
    384,687.80x = 577,031.70 × 100,377.80
  4. Step 4: Simplify right side
    384,687.80x = 57,921,172,576.26
  5. Step 5: Solve for x
    x = 57,921,172,576.26/384,687.80
  6. Step 6: Final answer
    x = 150,566.70

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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.