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Finding the Fourth Proportional to 275,143.04, 412,715.12 and 75,466.28

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Solution

The fourth proportional to 275,143.04, 412,715.12 and 75,466.28 is: 113,199.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,143.04 : 412,715.12 = 75,466.28 : x
  2. Step 2: Convert to fraction form
    275,143.04/412,715.12 = 75,466.28/x
  3. Step 3: Cross multiply
    275,143.04x = 412,715.12 × 75,466.28
  4. Step 4: Simplify right side
    275,143.04x = 31,146,074,806.15
  5. Step 5: Solve for x
    x = 31,146,074,806.15/275,143.04
  6. Step 6: Final answer
    x = 113,199.57

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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.