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Finding the Fourth Proportional to 247,306.74, 370,987.37 and 78,787.86

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Solution

The fourth proportional to 247,306.74, 370,987.37 and 78,787.86 is: 118,190.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,306.74 : 370,987.37 = 78,787.86 : x
  2. Step 2: Convert to fraction form
    247,306.74/370,987.37 = 78,787.86/x
  3. Step 3: Cross multiply
    247,306.74x = 370,987.37 × 78,787.86
  4. Step 4: Simplify right side
    247,306.74x = 29,229,300,969.33
  5. Step 5: Solve for x
    x = 29,229,300,969.33/247,306.74
  6. Step 6: Final answer
    x = 118,190.47

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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.