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Finding the Fourth Proportional to 247,900.39, 371,850.72 and 163,640.86

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Solution

The fourth proportional to 247,900.39, 371,850.72 and 163,640.86 is: 245,461.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,900.39 : 371,850.72 = 163,640.86 : x
  2. Step 2: Convert to fraction form
    247,900.39/371,850.72 = 163,640.86/x
  3. Step 3: Cross multiply
    247,900.39x = 371,850.72 × 163,640.86
  4. Step 4: Simplify right side
    247,900.39x = 60,849,971,612.42
  5. Step 5: Solve for x
    x = 60,849,971,612.42/247,900.39
  6. Step 6: Final answer
    x = 245,461.38

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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.