Home / 457,487.40-686,231.10-141,976.20

Finding the Fourth Proportional to 457,487.40, 686,231.10 and 141,976.20

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Solution

The fourth proportional to 457,487.40, 686,231.10 and 141,976.20 is: 212,964.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,487.40 : 686,231.10 = 141,976.20 : x
  2. Step 2: Convert to fraction form
    457,487.40/686,231.10 = 141,976.20/x
  3. Step 3: Cross multiply
    457,487.40x = 686,231.10 × 141,976.20
  4. Step 4: Simplify right side
    457,487.40x = 97,428,483,899.82
  5. Step 5: Solve for x
    x = 97,428,483,899.82/457,487.40
  6. Step 6: Final answer
    x = 212,964.30

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Similar ratio
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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.