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Finding the Fourth Proportional to 247,354.71, 371,209.22 and 105,299.58

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Solution

The fourth proportional to 247,354.71, 371,209.22 and 105,299.58 is: 158,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,354.71 : 371,209.22 = 105,299.58 : x
  2. Step 2: Convert to fraction form
    247,354.71/371,209.22 = 105,299.58/x
  3. Step 3: Cross multiply
    247,354.71x = 371,209.22 × 105,299.58
  4. Step 4: Simplify right side
    247,354.71x = 39,088,174,431.63
  5. Step 5: Solve for x
    x = 39,088,174,431.63/247,354.71
  6. Step 6: Final answer
    x = 158,024.78

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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.