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Finding the Fourth Proportional to 276,685.30, 415,027.95 and 253,065.70

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Solution

The fourth proportional to 276,685.30, 415,027.95 and 253,065.70 is: 379,598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,685.30 : 415,027.95 = 253,065.70 : x
  2. Step 2: Convert to fraction form
    276,685.30/415,027.95 = 253,065.70/x
  3. Step 3: Cross multiply
    276,685.30x = 415,027.95 × 253,065.70
  4. Step 4: Simplify right side
    276,685.30x = 105,029,338,686.32
  5. Step 5: Solve for x
    x = 105,029,338,686.32/276,685.30
  6. Step 6: Final answer
    x = 379,598.55

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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.