Home / 458,638.20-688,022.10-143,062.20

Finding the Fourth Proportional to 458,638.20, 688,022.10 and 143,062.20

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Solution

The fourth proportional to 458,638.20, 688,022.10 and 143,062.20 is: 214,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,638.20 : 688,022.10 = 143,062.20 : x
  2. Step 2: Convert to fraction form
    458,638.20/688,022.10 = 143,062.20/x
  3. Step 3: Cross multiply
    458,638.20x = 688,022.10 × 143,062.20
  4. Step 4: Simplify right side
    458,638.20x = 98,429,955,274.62
  5. Step 5: Solve for x
    x = 98,429,955,274.62/458,638.20
  6. Step 6: Final answer
    x = 214,613.51

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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.