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Finding the Fourth Proportional to 330,240.65, 495,204.84 and 127,931.52

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Solution

The fourth proportional to 330,240.65, 495,204.84 and 127,931.52 is: 191,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,240.65 : 495,204.84 = 127,931.52 : x
  2. Step 2: Convert to fraction form
    330,240.65/495,204.84 = 127,931.52/x
  3. Step 3: Cross multiply
    330,240.65x = 495,204.84 × 127,931.52
  4. Step 4: Simplify right side
    330,240.65x = 63,352,307,892.56
  5. Step 5: Solve for x
    x = 63,352,307,892.56/330,240.65
  6. Step 6: Final answer
    x = 191,836.80

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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.