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Finding the Fourth Proportional to 272,713.11, 409,113.96 and 80,607.03

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Solution

The fourth proportional to 272,713.11, 409,113.96 and 80,607.03 is: 120,923.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,713.11 : 409,113.96 = 80,607.03 : x
  2. Step 2: Convert to fraction form
    272,713.11/409,113.96 = 80,607.03/x
  3. Step 3: Cross multiply
    272,713.11x = 409,113.96 × 80,607.03
  4. Step 4: Simplify right side
    272,713.11x = 32,977,461,247.14
  5. Step 5: Solve for x
    x = 32,977,461,247.14/272,713.11
  6. Step 6: Final answer
    x = 120,923.64

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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.