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Finding the Fourth Proportional to 330,040.10, 495,060.15 and 80,722.10

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Solution

The fourth proportional to 330,040.10, 495,060.15 and 80,722.10 is: 121,083.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,040.10 : 495,060.15 = 80,722.10 : x
  2. Step 2: Convert to fraction form
    330,040.10/495,060.15 = 80,722.10/x
  3. Step 3: Cross multiply
    330,040.10x = 495,060.15 × 80,722.10
  4. Step 4: Simplify right side
    330,040.10x = 39,962,294,934.32
  5. Step 5: Solve for x
    x = 39,962,294,934.32/330,040.10
  6. Step 6: Final answer
    x = 121,083.15

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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.