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Finding the Fourth Proportional to 330,078.59, 495,059.35 and 150,121.86

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Solution

The fourth proportional to 330,078.59, 495,059.35 and 150,121.86 is: 225,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,078.59 : 495,059.35 = 150,121.86 : x
  2. Step 2: Convert to fraction form
    330,078.59/495,059.35 = 150,121.86/x
  3. Step 3: Cross multiply
    330,078.59x = 495,059.35 × 150,121.86
  4. Step 4: Simplify right side
    330,078.59x = 74,319,230,432.39
  5. Step 5: Solve for x
    x = 74,319,230,432.39/330,078.59
  6. Step 6: Final answer
    x = 225,156.17

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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.