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Finding the Fourth Proportional to 221,345.20, 332,190.60 and 103,031.20

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Solution

The fourth proportional to 221,345.20, 332,190.60 and 103,031.20 is: 154,627.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,345.20 : 332,190.60 = 103,031.20 : x
  2. Step 2: Convert to fraction form
    221,345.20/332,190.60 = 103,031.20/x
  3. Step 3: Cross multiply
    221,345.20x = 332,190.60 × 103,031.20
  4. Step 4: Simplify right side
    221,345.20x = 34,225,996,146.72
  5. Step 5: Solve for x
    x = 34,225,996,146.72/221,345.20
  6. Step 6: Final answer
    x = 154,627.23

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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.