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Finding the Fourth Proportional to 330,513.60, 495,423.84 and 161,801.28

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Solution

The fourth proportional to 330,513.60, 495,423.84 and 161,801.28 is: 242,532.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,513.60 : 495,423.84 = 161,801.28 : x
  2. Step 2: Convert to fraction form
    330,513.60/495,423.84 = 161,801.28/x
  3. Step 3: Cross multiply
    330,513.60x = 495,423.84 × 161,801.28
  4. Step 4: Simplify right side
    330,513.60x = 80,160,211,454.52
  5. Step 5: Solve for x
    x = 80,160,211,454.52/330,513.60
  6. Step 6: Final answer
    x = 242,532.26

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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.