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Finding the Fourth Proportional to 231,920.10, 347,714.10 and 89,643.60

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Solution

The fourth proportional to 231,920.10, 347,714.10 and 89,643.60 is: 134,401.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,920.10 : 347,714.10 = 89,643.60 : x
  2. Step 2: Convert to fraction form
    231,920.10/347,714.10 = 89,643.60/x
  3. Step 3: Cross multiply
    231,920.10x = 347,714.10 × 89,643.60
  4. Step 4: Simplify right side
    231,920.10x = 31,170,343,694.76
  5. Step 5: Solve for x
    x = 31,170,343,694.76/231,920.10
  6. Step 6: Final answer
    x = 134,401.22

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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.