Home / 338,972.28-508,259.06-128,625

Finding the Fourth Proportional to 338,972.28, 508,259.06 and 128,625

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Solution

The fourth proportional to 338,972.28, 508,259.06 and 128,625 is: 192,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,972.28 : 508,259.06 = 128,625 : x
  2. Step 2: Convert to fraction form
    338,972.28/508,259.06 = 128,625/x
  3. Step 3: Cross multiply
    338,972.28x = 508,259.06 × 128,625
  4. Step 4: Simplify right side
    338,972.28x = 65,374,821,592.50
  5. Step 5: Solve for x
    x = 65,374,821,592.50/338,972.28
  6. Step 6: Final answer
    x = 192,861.85

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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.