Home / 458,899.20-688,348.80-143,356.44

Finding the Fourth Proportional to 458,899.20, 688,348.80 and 143,356.44

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Solution

The fourth proportional to 458,899.20, 688,348.80 and 143,356.44 is: 215,034.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,899.20 : 688,348.80 = 143,356.44 : x
  2. Step 2: Convert to fraction form
    458,899.20/688,348.80 = 143,356.44/x
  3. Step 3: Cross multiply
    458,899.20x = 688,348.80 × 143,356.44
  4. Step 4: Simplify right side
    458,899.20x = 98,679,233,446.27
  5. Step 5: Solve for x
    x = 98,679,233,446.27/458,899.20
  6. Step 6: Final answer
    x = 215,034.66

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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.