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Finding the Fourth Proportional to 247,368.94, 371,034.78 and 78,882.46

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Solution

The fourth proportional to 247,368.94, 371,034.78 and 78,882.46 is: 118,317.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,368.94 : 371,034.78 = 78,882.46 : x
  2. Step 2: Convert to fraction form
    247,368.94/371,034.78 = 78,882.46/x
  3. Step 3: Cross multiply
    247,368.94x = 371,034.78 × 78,882.46
  4. Step 4: Simplify right side
    247,368.94x = 29,268,134,968.56
  5. Step 5: Solve for x
    x = 29,268,134,968.56/247,368.94
  6. Step 6: Final answer
    x = 118,317.75

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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.