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Finding the Fourth Proportional to 243,615.17, 365,485.80 and 75,131.78

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Solution

The fourth proportional to 243,615.17, 365,485.80 and 75,131.78 is: 112,717.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,615.17 : 365,485.80 = 75,131.78 : x
  2. Step 2: Convert to fraction form
    243,615.17/365,485.80 = 75,131.78/x
  3. Step 3: Cross multiply
    243,615.17x = 365,485.80 × 75,131.78
  4. Step 4: Simplify right side
    243,615.17x = 27,459,596,891.30
  5. Step 5: Solve for x
    x = 27,459,596,891.30/243,615.17
  6. Step 6: Final answer
    x = 112,717.11

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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.