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Finding the Fourth Proportional to 275,438.40, 413,215.20 and 88,468.80

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Solution

The fourth proportional to 275,438.40, 413,215.20 and 88,468.80 is: 132,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,438.40 : 413,215.20 = 88,468.80 : x
  2. Step 2: Convert to fraction form
    275,438.40/413,215.20 = 88,468.80/x
  3. Step 3: Cross multiply
    275,438.40x = 413,215.20 × 88,468.80
  4. Step 4: Simplify right side
    275,438.40x = 36,556,652,885.76
  5. Step 5: Solve for x
    x = 36,556,652,885.76/275,438.40
  6. Step 6: Final answer
    x = 132,721.70

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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.