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Finding the Fourth Proportional to 247,408.32, 371,136.78 and 69,916.68

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Solution

The fourth proportional to 247,408.32, 371,136.78 and 69,916.68 is: 104,881.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,408.32 : 371,136.78 = 69,916.68 : x
  2. Step 2: Convert to fraction form
    247,408.32/371,136.78 = 69,916.68/x
  3. Step 3: Cross multiply
    247,408.32x = 371,136.78 × 69,916.68
  4. Step 4: Simplify right side
    247,408.32x = 25,948,651,483.49
  5. Step 5: Solve for x
    x = 25,948,651,483.49/247,408.32
  6. Step 6: Final answer
    x = 104,881.89

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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.