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Finding the Fourth Proportional to 247,309.54, 370,987.80 and 67,397.20

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Solution

The fourth proportional to 247,309.54, 370,987.80 and 67,397.20 is: 101,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,309.54 : 370,987.80 = 67,397.20 : x
  2. Step 2: Convert to fraction form
    247,309.54/370,987.80 = 67,397.20/x
  3. Step 3: Cross multiply
    247,309.54x = 370,987.80 × 67,397.20
  4. Step 4: Simplify right side
    247,309.54x = 25,003,537,773.95
  5. Step 5: Solve for x
    x = 25,003,537,773.95/247,309.54
  6. Step 6: Final answer
    x = 101,102.20

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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.