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Finding the Fourth Proportional to 252,630.34, 378,722.56 and 102,995.80

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Solution

The fourth proportional to 252,630.34, 378,722.56 and 102,995.80 is: 154,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,630.34 : 378,722.56 = 102,995.80 : x
  2. Step 2: Convert to fraction form
    252,630.34/378,722.56 = 102,995.80/x
  3. Step 3: Cross multiply
    252,630.34x = 378,722.56 × 102,995.80
  4. Step 4: Simplify right side
    252,630.34x = 39,006,832,787.76
  5. Step 5: Solve for x
    x = 39,006,832,787.76/252,630.34
  6. Step 6: Final answer
    x = 154,402.80

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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.