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Finding the Fourth Proportional to 279,380.46, 416,726.30 and 256,454.22

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Solution

The fourth proportional to 279,380.46, 416,726.30 and 256,454.22 is: 382,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,380.46 : 416,726.30 = 256,454.22 : x
  2. Step 2: Convert to fraction form
    279,380.46/416,726.30 = 256,454.22/x
  3. Step 3: Cross multiply
    279,380.46x = 416,726.30 × 256,454.22
  4. Step 4: Simplify right side
    279,380.46x = 106,871,216,937.72
  5. Step 5: Solve for x
    x = 106,871,216,937.72/279,380.46
  6. Step 6: Final answer
    x = 382,529.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.