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Finding the Fourth Proportional to 273,003.30, 409,562.55 and 86,033.70

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Solution

The fourth proportional to 273,003.30, 409,562.55 and 86,033.70 is: 129,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,003.30 : 409,562.55 = 86,033.70 : x
  2. Step 2: Convert to fraction form
    273,003.30/409,562.55 = 86,033.70/x
  3. Step 3: Cross multiply
    273,003.30x = 409,562.55 × 86,033.70
  4. Step 4: Simplify right side
    273,003.30x = 35,236,181,557.94
  5. Step 5: Solve for x
    x = 35,236,181,557.94/273,003.30
  6. Step 6: Final answer
    x = 129,068.70

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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.