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Finding the Fourth Proportional to 247,207.90, 370,811.85 and 69,712.60

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Solution

The fourth proportional to 247,207.90, 370,811.85 and 69,712.60 is: 104,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,207.90 : 370,811.85 = 69,712.60 : x
  2. Step 2: Convert to fraction form
    247,207.90/370,811.85 = 69,712.60/x
  3. Step 3: Cross multiply
    247,207.90x = 370,811.85 × 69,712.60
  4. Step 4: Simplify right side
    247,207.90x = 25,850,258,174.31
  5. Step 5: Solve for x
    x = 25,850,258,174.31/247,207.90
  6. Step 6: Final answer
    x = 104,568.90

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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.