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Finding the Fourth Proportional to 508,605.90, 701,885.04 and 279,184.66

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Solution

The fourth proportional to 508,605.90, 701,885.04 and 279,184.66 is: 385,279.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,605.90 : 701,885.04 = 279,184.66 : x
  2. Step 2: Convert to fraction form
    508,605.90/701,885.04 = 279,184.66/x
  3. Step 3: Cross multiply
    508,605.90x = 701,885.04 × 279,184.66
  4. Step 4: Simplify right side
    508,605.90x = 195,955,536,251.49
  5. Step 5: Solve for x
    x = 195,955,536,251.49/508,605.90
  6. Step 6: Final answer
    x = 385,279.72

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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.