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Finding the Fourth Proportional to 479,401.85, 718,915.92 and 179,718.95

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Solution

The fourth proportional to 479,401.85, 718,915.92 and 179,718.95 is: 269,508.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,401.85 : 718,915.92 = 179,718.95 : x
  2. Step 2: Convert to fraction form
    479,401.85/718,915.92 = 179,718.95/x
  3. Step 3: Cross multiply
    479,401.85x = 718,915.92 × 179,718.95
  4. Step 4: Simplify right side
    479,401.85x = 129,202,810,686.10
  5. Step 5: Solve for x
    x = 129,202,810,686.10/479,401.85
  6. Step 6: Final answer
    x = 269,508.37

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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.