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Finding the Fourth Proportional to 288,843.30, 433,264.95 and 89,145.90

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Solution

The fourth proportional to 288,843.30, 433,264.95 and 89,145.90 is: 133,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,843.30 : 433,264.95 = 89,145.90 : x
  2. Step 2: Convert to fraction form
    288,843.30/433,264.95 = 89,145.90/x
  3. Step 3: Cross multiply
    288,843.30x = 433,264.95 × 89,145.90
  4. Step 4: Simplify right side
    288,843.30x = 38,623,793,906.21
  5. Step 5: Solve for x
    x = 38,623,793,906.21/288,843.30
  6. Step 6: Final answer
    x = 133,718.85

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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.