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Finding the Fourth Proportional to 276,808.88, 381,994.52 and 155,988.98

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Solution

The fourth proportional to 276,808.88, 381,994.52 and 155,988.98 is: 215,263.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,808.88 : 381,994.52 = 155,988.98 : x
  2. Step 2: Convert to fraction form
    276,808.88/381,994.52 = 155,988.98/x
  3. Step 3: Cross multiply
    276,808.88x = 381,994.52 × 155,988.98
  4. Step 4: Simplify right side
    276,808.88x = 59,586,932,850.47
  5. Step 5: Solve for x
    x = 59,586,932,850.47/276,808.88
  6. Step 6: Final answer
    x = 215,263.81

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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.