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Finding the Fourth Proportional to 247,838.40, 371,347.20 and 142,473.60

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Solution

The fourth proportional to 247,838.40, 371,347.20 and 142,473.60 is: 213,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,838.40 : 371,347.20 = 142,473.60 : x
  2. Step 2: Convert to fraction form
    247,838.40/371,347.20 = 142,473.60/x
  3. Step 3: Cross multiply
    247,838.40x = 371,347.20 × 142,473.60
  4. Step 4: Simplify right side
    247,838.40x = 52,907,172,433.92
  5. Step 5: Solve for x
    x = 52,907,172,433.92/247,838.40
  6. Step 6: Final answer
    x = 213,474.48

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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.