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Finding the Fourth Proportional to 330,393.60, 495,590.40 and 108,748.80

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Solution

The fourth proportional to 330,393.60, 495,590.40 and 108,748.80 is: 163,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,393.60 : 495,590.40 = 108,748.80 : x
  2. Step 2: Convert to fraction form
    330,393.60/495,590.40 = 108,748.80/x
  3. Step 3: Cross multiply
    330,393.60x = 495,590.40 × 108,748.80
  4. Step 4: Simplify right side
    330,393.60x = 53,894,861,291.52
  5. Step 5: Solve for x
    x = 53,894,861,291.52/330,393.60
  6. Step 6: Final answer
    x = 163,123.20

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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.