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Finding the Fourth Proportional to 247,602.82, 371,400 and 79,121.92

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Solution

The fourth proportional to 247,602.82, 371,400 and 79,121.92 is: 118,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,602.82 : 371,400 = 79,121.92 : x
  2. Step 2: Convert to fraction form
    247,602.82/371,400 = 79,121.92/x
  3. Step 3: Cross multiply
    247,602.82x = 371,400 × 79,121.92
  4. Step 4: Simplify right side
    247,602.82x = 29,385,881,088
  5. Step 5: Solve for x
    x = 29,385,881,088/247,602.82
  6. Step 6: Final answer
    x = 118,681.53

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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.