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Finding the Fourth Proportional to 276,678.94, 381,012.95 and 240,363.80

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Solution

The fourth proportional to 276,678.94, 381,012.95 and 240,363.80 is: 331,003.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,678.94 : 381,012.95 = 240,363.80 : x
  2. Step 2: Convert to fraction form
    276,678.94/381,012.95 = 240,363.80/x
  3. Step 3: Cross multiply
    276,678.94x = 381,012.95 × 240,363.80
  4. Step 4: Simplify right side
    276,678.94x = 91,581,722,064.65
  5. Step 5: Solve for x
    x = 91,581,722,064.65/276,678.94
  6. Step 6: Final answer
    x = 331,003.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.