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Finding the Fourth Proportional to 330,140.80, 495,211.20 and 108,524.80

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Solution

The fourth proportional to 330,140.80, 495,211.20 and 108,524.80 is: 162,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,140.80 : 495,211.20 = 108,524.80 : x
  2. Step 2: Convert to fraction form
    330,140.80/495,211.20 = 108,524.80/x
  3. Step 3: Cross multiply
    330,140.80x = 495,211.20 × 108,524.80
  4. Step 4: Simplify right side
    330,140.80x = 53,742,696,437.76
  5. Step 5: Solve for x
    x = 53,742,696,437.76/330,140.80
  6. Step 6: Final answer
    x = 162,787.20

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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.