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Finding the Fourth Proportional to 303,337.40, 455,006.10 and 90,104.90

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Solution

The fourth proportional to 303,337.40, 455,006.10 and 90,104.90 is: 135,157.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,337.40 : 455,006.10 = 90,104.90 : x
  2. Step 2: Convert to fraction form
    303,337.40/455,006.10 = 90,104.90/x
  3. Step 3: Cross multiply
    303,337.40x = 455,006.10 × 90,104.90
  4. Step 4: Simplify right side
    303,337.40x = 40,998,279,139.89
  5. Step 5: Solve for x
    x = 40,998,279,139.89/303,337.40
  6. Step 6: Final answer
    x = 135,157.35

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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.