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Finding the Fourth Proportional to 247,842.40, 371,245.20 and 136,904.80

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Solution

The fourth proportional to 247,842.40, 371,245.20 and 136,904.80 is: 205,070.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,842.40 : 371,245.20 = 136,904.80 : x
  2. Step 2: Convert to fraction form
    247,842.40/371,245.20 = 136,904.80/x
  3. Step 3: Cross multiply
    247,842.40x = 371,245.20 × 136,904.80
  4. Step 4: Simplify right side
    247,842.40x = 50,825,249,856.96
  5. Step 5: Solve for x
    x = 50,825,249,856.96/247,842.40
  6. Step 6: Final answer
    x = 205,070.84

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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.