Home / 221,002.20-331,503.30-137,021.40

Finding the Fourth Proportional to 221,002.20, 331,503.30 and 137,021.40

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Solution

The fourth proportional to 221,002.20, 331,503.30 and 137,021.40 is: 205,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,002.20 : 331,503.30 = 137,021.40 : x
  2. Step 2: Convert to fraction form
    221,002.20/331,503.30 = 137,021.40/x
  3. Step 3: Cross multiply
    221,002.20x = 331,503.30 × 137,021.40
  4. Step 4: Simplify right side
    221,002.20x = 45,423,046,270.62
  5. Step 5: Solve for x
    x = 45,423,046,270.62/221,002.20
  6. Step 6: Final answer
    x = 205,532.10

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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.