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Finding the Fourth Proportional to 247,240.88, 370,930.44 and 81,145.52

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Solution

The fourth proportional to 247,240.88, 370,930.44 and 81,145.52 is: 121,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,240.88 : 370,930.44 = 81,145.52 : x
  2. Step 2: Convert to fraction form
    247,240.88/370,930.44 = 81,145.52/x
  3. Step 3: Cross multiply
    247,240.88x = 370,930.44 × 81,145.52
  4. Step 4: Simplify right side
    247,240.88x = 30,099,343,437.63
  5. Step 5: Solve for x
    x = 30,099,343,437.63/247,240.88
  6. Step 6: Final answer
    x = 121,740.97

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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.