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Finding the Fourth Proportional to 247,217.49, 341,103.42 and 139,764.11

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Solution

The fourth proportional to 247,217.49, 341,103.42 and 139,764.11 is: 192,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,217.49 : 341,103.42 = 139,764.11 : x
  2. Step 2: Convert to fraction form
    247,217.49/341,103.42 = 139,764.11/x
  3. Step 3: Cross multiply
    247,217.49x = 341,103.42 × 139,764.11
  4. Step 4: Simplify right side
    247,217.49x = 47,674,014,208.74
  5. Step 5: Solve for x
    x = 47,674,014,208.74/247,217.49
  6. Step 6: Final answer
    x = 192,842.40

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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.