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Finding the Fourth Proportional to 243,997.56, 366,025.86 and 86,193.72

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Solution

The fourth proportional to 243,997.56, 366,025.86 and 86,193.72 is: 129,301.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,997.56 : 366,025.86 = 86,193.72 : x
  2. Step 2: Convert to fraction form
    243,997.56/366,025.86 = 86,193.72/x
  3. Step 3: Cross multiply
    243,997.56x = 366,025.86 × 86,193.72
  4. Step 4: Simplify right side
    243,997.56x = 31,549,130,489.60
  5. Step 5: Solve for x
    x = 31,549,130,489.60/243,997.56
  6. Step 6: Final answer
    x = 129,301.01

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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.