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Finding the Fourth Proportional to 330,319, 495,503.22 and 93,680.74

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Solution

The fourth proportional to 330,319, 495,503.22 and 93,680.74 is: 140,528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,319 : 495,503.22 = 93,680.74 : x
  2. Step 2: Convert to fraction form
    330,319/495,503.22 = 93,680.74/x
  3. Step 3: Cross multiply
    330,319x = 495,503.22 × 93,680.74
  4. Step 4: Simplify right side
    330,319x = 46,419,108,321.98
  5. Step 5: Solve for x
    x = 46,419,108,321.98/330,319
  6. Step 6: Final answer
    x = 140,528.12

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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.