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Finding the Fourth Proportional to 276,525.30, 381,616.47 and 155,666.82

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Solution

The fourth proportional to 276,525.30, 381,616.47 and 155,666.82 is: 214,826.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,525.30 : 381,616.47 = 155,666.82 : x
  2. Step 2: Convert to fraction form
    276,525.30/381,616.47 = 155,666.82/x
  3. Step 3: Cross multiply
    276,525.30x = 381,616.47 × 155,666.82
  4. Step 4: Simplify right side
    276,525.30x = 59,405,022,344.53
  5. Step 5: Solve for x
    x = 59,405,022,344.53/276,525.30
  6. Step 6: Final answer
    x = 214,826.72

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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.