Home / 381,259.10-571,489.61-128,452.25

Finding the Fourth Proportional to 381,259.10, 571,489.61 and 128,452.25

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Solution

The fourth proportional to 381,259.10, 571,489.61 and 128,452.25 is: 192,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,259.10 : 571,489.61 = 128,452.25 : x
  2. Step 2: Convert to fraction form
    381,259.10/571,489.61 = 128,452.25/x
  3. Step 3: Cross multiply
    381,259.10x = 571,489.61 × 128,452.25
  4. Step 4: Simplify right side
    381,259.10x = 73,409,123,398.67
  5. Step 5: Solve for x
    x = 73,409,123,398.67/381,259.10
  6. Step 6: Final answer
    x = 192,543.93

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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.