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Finding the Fourth Proportional to 311,884.80, 467,827.20 and 288,265.20

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Solution

The fourth proportional to 311,884.80, 467,827.20 and 288,265.20 is: 432,397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,884.80 : 467,827.20 = 288,265.20 : x
  2. Step 2: Convert to fraction form
    311,884.80/467,827.20 = 288,265.20/x
  3. Step 3: Cross multiply
    311,884.80x = 467,827.20 × 288,265.20
  4. Step 4: Simplify right side
    311,884.80x = 134,858,301,373.44
  5. Step 5: Solve for x
    x = 134,858,301,373.44/311,884.80
  6. Step 6: Final answer
    x = 432,397.80

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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.