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Finding the Fourth Proportional to 247,247.12, 370,899.63 and 78,708.39

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Solution

The fourth proportional to 247,247.12, 370,899.63 and 78,708.39 is: 118,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,247.12 : 370,899.63 = 78,708.39 : x
  2. Step 2: Convert to fraction form
    247,247.12/370,899.63 = 78,708.39/x
  3. Step 3: Cross multiply
    247,247.12x = 370,899.63 × 78,708.39
  4. Step 4: Simplify right side
    247,247.12x = 29,192,912,728.90
  5. Step 5: Solve for x
    x = 29,192,912,728.90/247,247.12
  6. Step 6: Final answer
    x = 118,071.80

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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.