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Finding the Fourth Proportional to 221,411.20, 332,116.80 and 203,040.40

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Solution

The fourth proportional to 221,411.20, 332,116.80 and 203,040.40 is: 304,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,411.20 : 332,116.80 = 203,040.40 : x
  2. Step 2: Convert to fraction form
    221,411.20/332,116.80 = 203,040.40/x
  3. Step 3: Cross multiply
    221,411.20x = 332,116.80 × 203,040.40
  4. Step 4: Simplify right side
    221,411.20x = 67,433,127,918.72
  5. Step 5: Solve for x
    x = 67,433,127,918.72/221,411.20
  6. Step 6: Final answer
    x = 304,560.60

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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.