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Finding the Fourth Proportional to 330,121.76, 495,253.71 and 102,412.76

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Solution

The fourth proportional to 330,121.76, 495,253.71 and 102,412.76 is: 153,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,121.76 : 495,253.71 = 102,412.76 : x
  2. Step 2: Convert to fraction form
    330,121.76/495,253.71 = 102,412.76/x
  3. Step 3: Cross multiply
    330,121.76x = 495,253.71 × 102,412.76
  4. Step 4: Simplify right side
    330,121.76x = 50,720,296,865.07
  5. Step 5: Solve for x
    x = 50,720,296,865.07/330,121.76
  6. Step 6: Final answer
    x = 153,641.18

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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.