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Finding the Fourth Proportional to 276,694.80, 415,042.20 and 253,075.20

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Solution

The fourth proportional to 276,694.80, 415,042.20 and 253,075.20 is: 379,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,694.80 : 415,042.20 = 253,075.20 : x
  2. Step 2: Convert to fraction form
    276,694.80/415,042.20 = 253,075.20/x
  3. Step 3: Cross multiply
    276,694.80x = 415,042.20 × 253,075.20
  4. Step 4: Simplify right side
    276,694.80x = 105,036,887,773.44
  5. Step 5: Solve for x
    x = 105,036,887,773.44/276,694.80
  6. Step 6: Final answer
    x = 379,612.80

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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.