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Finding the Fourth Proportional to 347,763.80, 521,645.70 and 268,934.60

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Solution

The fourth proportional to 347,763.80, 521,645.70 and 268,934.60 is: 403,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,763.80 : 521,645.70 = 268,934.60 : x
  2. Step 2: Convert to fraction form
    347,763.80/521,645.70 = 268,934.60/x
  3. Step 3: Cross multiply
    347,763.80x = 521,645.70 × 268,934.60
  4. Step 4: Simplify right side
    347,763.80x = 140,288,577,671.22
  5. Step 5: Solve for x
    x = 140,288,577,671.22/347,763.80
  6. Step 6: Final answer
    x = 403,401.90

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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.