Home / 457,778.20-686,732.10-142,202.20

Finding the Fourth Proportional to 457,778.20, 686,732.10 and 142,202.20

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Solution

The fourth proportional to 457,778.20, 686,732.10 and 142,202.20 is: 213,323.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,778.20 : 686,732.10 = 142,202.20 : x
  2. Step 2: Convert to fraction form
    457,778.20/686,732.10 = 142,202.20/x
  3. Step 3: Cross multiply
    457,778.20x = 686,732.10 × 142,202.20
  4. Step 4: Simplify right side
    457,778.20x = 97,654,815,430.62
  5. Step 5: Solve for x
    x = 97,654,815,430.62/457,778.20
  6. Step 6: Final answer
    x = 213,323.43

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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.