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Finding the Fourth Proportional to 253,139.80, 379,709.70 and 247,234.90

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Solution

The fourth proportional to 253,139.80, 379,709.70 and 247,234.90 is: 370,852.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,139.80 : 379,709.70 = 247,234.90 : x
  2. Step 2: Convert to fraction form
    253,139.80/379,709.70 = 247,234.90/x
  3. Step 3: Cross multiply
    253,139.80x = 379,709.70 × 247,234.90
  4. Step 4: Simplify right side
    253,139.80x = 93,877,489,708.53
  5. Step 5: Solve for x
    x = 93,877,489,708.53/253,139.80
  6. Step 6: Final answer
    x = 370,852.35

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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.