Home / 457,748.20-686,687.10-142,172.20

Finding the Fourth Proportional to 457,748.20, 686,687.10 and 142,172.20

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Solution

The fourth proportional to 457,748.20, 686,687.10 and 142,172.20 is: 213,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,748.20 : 686,687.10 = 142,172.20 : x
  2. Step 2: Convert to fraction form
    457,748.20/686,687.10 = 142,172.20/x
  3. Step 3: Cross multiply
    457,748.20x = 686,687.10 × 142,172.20
  4. Step 4: Simplify right side
    457,748.20x = 97,627,815,718.62
  5. Step 5: Solve for x
    x = 97,627,815,718.62/457,748.20
  6. Step 6: Final answer
    x = 213,278.43

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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.