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Finding the Fourth Proportional to 247,121.47, 341,023.93 and 139,687.73

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Solution

The fourth proportional to 247,121.47, 341,023.93 and 139,687.73 is: 192,766.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,121.47 : 341,023.93 = 139,687.73 : x
  2. Step 2: Convert to fraction form
    247,121.47/341,023.93 = 139,687.73/x
  3. Step 3: Cross multiply
    247,121.47x = 341,023.93 × 139,687.73
  4. Step 4: Simplify right side
    247,121.47x = 47,636,858,657.38
  5. Step 5: Solve for x
    x = 47,636,858,657.38/247,121.47
  6. Step 6: Final answer
    x = 192,766.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.