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Finding the Fourth Proportional to 347,310.80, 520,966.20 and 268,578.80

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Solution

The fourth proportional to 347,310.80, 520,966.20 and 268,578.80 is: 402,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,310.80 : 520,966.20 = 268,578.80 : x
  2. Step 2: Convert to fraction form
    347,310.80/520,966.20 = 268,578.80/x
  3. Step 3: Cross multiply
    347,310.80x = 520,966.20 × 268,578.80
  4. Step 4: Simplify right side
    347,310.80x = 139,920,476,836.56
  5. Step 5: Solve for x
    x = 139,920,476,836.56/347,310.80
  6. Step 6: Final answer
    x = 402,868.20

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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.