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Finding the Fourth Proportional to 221,570.40, 332,248.08 and 103,213.92

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Solution

The fourth proportional to 221,570.40, 332,248.08 and 103,213.92 is: 154,770.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,570.40 : 332,248.08 = 103,213.92 : x
  2. Step 2: Convert to fraction form
    221,570.40/332,248.08 = 103,213.92/x
  3. Step 3: Cross multiply
    221,570.40x = 332,248.08 × 103,213.92
  4. Step 4: Simplify right side
    221,570.40x = 34,292,626,749.27
  5. Step 5: Solve for x
    x = 34,292,626,749.27/221,570.40
  6. Step 6: Final answer
    x = 154,770.79

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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.