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Finding the Fourth Proportional to 508,454.88, 701,711.31 and 279,056.49

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Solution

The fourth proportional to 508,454.88, 701,711.31 and 279,056.49 is: 385,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,454.88 : 701,711.31 = 279,056.49 : x
  2. Step 2: Convert to fraction form
    508,454.88/701,711.31 = 279,056.49/x
  3. Step 3: Cross multiply
    508,454.88x = 701,711.31 × 279,056.49
  4. Step 4: Simplify right side
    508,454.88x = 195,817,095,161.90
  5. Step 5: Solve for x
    x = 195,817,095,161.90/508,454.88
  6. Step 6: Final answer
    x = 385,121.87

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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.