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Finding the Fourth Proportional to 247,188.90, 341,129.87 and 139,752.53

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Solution

The fourth proportional to 247,188.90, 341,129.87 and 139,752.53 is: 192,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,188.90 : 341,129.87 = 139,752.53 : x
  2. Step 2: Convert to fraction form
    247,188.90/341,129.87 = 139,752.53/x
  3. Step 3: Cross multiply
    247,188.90x = 341,129.87 × 139,752.53
  4. Step 4: Simplify right side
    247,188.90x = 47,673,759,986.66
  5. Step 5: Solve for x
    x = 47,673,759,986.66/247,188.90
  6. Step 6: Final answer
    x = 192,863.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.