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Finding the Fourth Proportional to 247,364.16, 371,072.64 and 81,152.64

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Solution

The fourth proportional to 247,364.16, 371,072.64 and 81,152.64 is: 121,737.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,364.16 : 371,072.64 = 81,152.64 : x
  2. Step 2: Convert to fraction form
    247,364.16/371,072.64 = 81,152.64/x
  3. Step 3: Cross multiply
    247,364.16x = 371,072.64 × 81,152.64
  4. Step 4: Simplify right side
    247,364.16x = 30,113,524,367.77
  5. Step 5: Solve for x
    x = 30,113,524,367.77/247,364.16
  6. Step 6: Final answer
    x = 121,737.62

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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.