Home / 457,760.20-686,705.10-142,184.20

Finding the Fourth Proportional to 457,760.20, 686,705.10 and 142,184.20

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Solution

The fourth proportional to 457,760.20, 686,705.10 and 142,184.20 is: 213,296.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,760.20 : 686,705.10 = 142,184.20 : x
  2. Step 2: Convert to fraction form
    457,760.20/686,705.10 = 142,184.20/x
  3. Step 3: Cross multiply
    457,760.20x = 686,705.10 × 142,184.20
  4. Step 4: Simplify right side
    457,760.20x = 97,638,615,279.42
  5. Step 5: Solve for x
    x = 97,638,615,279.42/457,760.20
  6. Step 6: Final answer
    x = 213,296.43

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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.