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Finding the Fourth Proportional to 247,213.89, 370,820.84 and 89,405.44

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Solution

The fourth proportional to 247,213.89, 370,820.84 and 89,405.44 is: 134,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,213.89 : 370,820.84 = 89,405.44 : x
  2. Step 2: Convert to fraction form
    247,213.89/370,820.84 = 89,405.44/x
  3. Step 3: Cross multiply
    247,213.89x = 370,820.84 × 89,405.44
  4. Step 4: Simplify right side
    247,213.89x = 33,153,398,987.29
  5. Step 5: Solve for x
    x = 33,153,398,987.29/247,213.89
  6. Step 6: Final answer
    x = 134,108.16

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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.