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Finding the Fourth Proportional to 247,360.99, 371,101.89 and 78,881.33

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Solution

The fourth proportional to 247,360.99, 371,101.89 and 78,881.33 is: 118,341.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,360.99 : 371,101.89 = 78,881.33 : x
  2. Step 2: Convert to fraction form
    247,360.99/371,101.89 = 78,881.33/x
  3. Step 3: Cross multiply
    247,360.99x = 371,101.89 × 78,881.33
  4. Step 4: Simplify right side
    247,360.99x = 29,273,010,648.71
  5. Step 5: Solve for x
    x = 29,273,010,648.71/247,360.99
  6. Step 6: Final answer
    x = 118,341.26

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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.