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Finding the Fourth Proportional to 230,483.12, 345,644.73 and 80,720.11

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Solution

The fourth proportional to 230,483.12, 345,644.73 and 80,720.11 is: 121,052.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,483.12 : 345,644.73 = 80,720.11 : x
  2. Step 2: Convert to fraction form
    230,483.12/345,644.73 = 80,720.11/x
  3. Step 3: Cross multiply
    230,483.12x = 345,644.73 × 80,720.11
  4. Step 4: Simplify right side
    230,483.12x = 27,900,479,762.41
  5. Step 5: Solve for x
    x = 27,900,479,762.41/230,483.12
  6. Step 6: Final answer
    x = 121,052.16

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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.