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Finding the Fourth Proportional to 288,380.30, 432,644.29 and 88,702.40

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Solution

The fourth proportional to 288,380.30, 432,644.29 and 88,702.40 is: 133,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,380.30 : 432,644.29 = 88,702.40 : x
  2. Step 2: Convert to fraction form
    288,380.30/432,644.29 = 88,702.40/x
  3. Step 3: Cross multiply
    288,380.30x = 432,644.29 × 88,702.40
  4. Step 4: Simplify right side
    288,380.30x = 38,376,587,729.15
  5. Step 5: Solve for x
    x = 38,376,587,729.15/288,380.30
  6. Step 6: Final answer
    x = 133,076.32

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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.