Home / 276,418.04-381,393.78-155,515.21

Finding the Fourth Proportional to 276,418.04, 381,393.78 and 155,515.21

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Solution

The fourth proportional to 276,418.04, 381,393.78 and 155,515.21 is: 214,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,418.04 : 381,393.78 = 155,515.21 : x
  2. Step 2: Convert to fraction form
    276,418.04/381,393.78 = 155,515.21/x
  3. Step 3: Cross multiply
    276,418.04x = 381,393.78 × 155,515.21
  4. Step 4: Simplify right side
    276,418.04x = 59,312,534,617.39
  5. Step 5: Solve for x
    x = 59,312,534,617.39/276,418.04
  6. Step 6: Final answer
    x = 214,575.48

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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.