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Finding the Fourth Proportional to 376,839.40, 520,032.48 and 207,069.88

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Solution

The fourth proportional to 376,839.40, 520,032.48 and 207,069.88 is: 285,753.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,839.40 : 520,032.48 = 207,069.88 : x
  2. Step 2: Convert to fraction form
    376,839.40/520,032.48 = 207,069.88/x
  3. Step 3: Cross multiply
    376,839.40x = 520,032.48 × 207,069.88
  4. Step 4: Simplify right side
    376,839.40x = 107,683,063,229.70
  5. Step 5: Solve for x
    x = 107,683,063,229.70/376,839.40
  6. Step 6: Final answer
    x = 285,753.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.