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Finding the Fourth Proportional to 278,370.82, 417,351.75 and 88,722.06

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Solution

The fourth proportional to 278,370.82, 417,351.75 and 88,722.06 is: 133,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,370.82 : 417,351.75 = 88,722.06 : x
  2. Step 2: Convert to fraction form
    278,370.82/417,351.75 = 88,722.06/x
  3. Step 3: Cross multiply
    278,370.82x = 417,351.75 × 88,722.06
  4. Step 4: Simplify right side
    278,370.82x = 37,028,307,004.61
  5. Step 5: Solve for x
    x = 37,028,307,004.61/278,370.82
  6. Step 6: Final answer
    x = 133,017.92

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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.