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Finding the Fourth Proportional to 296,043.20, 444,064.80 and 85,702.40

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Solution

The fourth proportional to 296,043.20, 444,064.80 and 85,702.40 is: 128,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,043.20 : 444,064.80 = 85,702.40 : x
  2. Step 2: Convert to fraction form
    296,043.20/444,064.80 = 85,702.40/x
  3. Step 3: Cross multiply
    296,043.20x = 444,064.80 × 85,702.40
  4. Step 4: Simplify right side
    296,043.20x = 38,057,419,115.52
  5. Step 5: Solve for x
    x = 38,057,419,115.52/296,043.20
  6. Step 6: Final answer
    x = 128,553.60

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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.