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Finding the Fourth Proportional to 341,729.20, 512,591.10 and 89,009.20

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Solution

The fourth proportional to 341,729.20, 512,591.10 and 89,009.20 is: 133,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,729.20 : 512,591.10 = 89,009.20 : x
  2. Step 2: Convert to fraction form
    341,729.20/512,591.10 = 89,009.20/x
  3. Step 3: Cross multiply
    341,729.20x = 512,591.10 × 89,009.20
  4. Step 4: Simplify right side
    341,729.20x = 45,625,323,738.12
  5. Step 5: Solve for x
    x = 45,625,323,738.12/341,729.20
  6. Step 6: Final answer
    x = 133,513.10

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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.