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Finding the Fourth Proportional to 330,573.25, 495,820.90 and 90,711.41

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Solution

The fourth proportional to 330,573.25, 495,820.90 and 90,711.41 is: 136,056.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,573.25 : 495,820.90 = 90,711.41 : x
  2. Step 2: Convert to fraction form
    330,573.25/495,820.90 = 90,711.41/x
  3. Step 3: Cross multiply
    330,573.25x = 495,820.90 × 90,711.41
  4. Step 4: Simplify right side
    330,573.25x = 44,976,610,767.75
  5. Step 5: Solve for x
    x = 44,976,610,767.75/330,573.25
  6. Step 6: Final answer
    x = 136,056.41

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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.