Home / 458,979.40-688,469.10-143,468.20

Finding the Fourth Proportional to 458,979.40, 688,469.10 and 143,468.20

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Solution

The fourth proportional to 458,979.40, 688,469.10 and 143,468.20 is: 215,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,979.40 : 688,469.10 = 143,468.20 : x
  2. Step 2: Convert to fraction form
    458,979.40/688,469.10 = 143,468.20/x
  3. Step 3: Cross multiply
    458,979.40x = 688,469.10 × 143,468.20
  4. Step 4: Simplify right side
    458,979.40x = 98,773,422,532.62
  5. Step 5: Solve for x
    x = 98,773,422,532.62/458,979.40
  6. Step 6: Final answer
    x = 215,202.30

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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.