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Finding the Fourth Proportional to 253,141.80, 379,712.70 and 239,363.70

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Solution

The fourth proportional to 253,141.80, 379,712.70 and 239,363.70 is: 359,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,141.80 : 379,712.70 = 239,363.70 : x
  2. Step 2: Convert to fraction form
    253,141.80/379,712.70 = 239,363.70/x
  3. Step 3: Cross multiply
    253,141.80x = 379,712.70 × 239,363.70
  4. Step 4: Simplify right side
    253,141.80x = 90,889,436,808.99
  5. Step 5: Solve for x
    x = 90,889,436,808.99/253,141.80
  6. Step 6: Final answer
    x = 359,045.55

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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.