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Finding the Fourth Proportional to 247,971.20, 371,971.20 and 70,491.20

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Solution

The fourth proportional to 247,971.20, 371,971.20 and 70,491.20 is: 105,740.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,971.20 : 371,971.20 = 70,491.20 : x
  2. Step 2: Convert to fraction form
    247,971.20/371,971.20 = 70,491.20/x
  3. Step 3: Cross multiply
    247,971.20x = 371,971.20 × 70,491.20
  4. Step 4: Simplify right side
    247,971.20x = 26,220,696,253.44
  5. Step 5: Solve for x
    x = 26,220,696,253.44/247,971.20
  6. Step 6: Final answer
    x = 105,740.89

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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.