Home / 276,277.32-381,258.90-155,418.57

Finding the Fourth Proportional to 276,277.32, 381,258.90 and 155,418.57

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Solution

The fourth proportional to 276,277.32, 381,258.90 and 155,418.57 is: 214,475.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,277.32 : 381,258.90 = 155,418.57 : x
  2. Step 2: Convert to fraction form
    276,277.32/381,258.90 = 155,418.57/x
  3. Step 3: Cross multiply
    276,277.32x = 381,258.90 × 155,418.57
  4. Step 4: Simplify right side
    276,277.32x = 59,254,713,037.77
  5. Step 5: Solve for x
    x = 59,254,713,037.77/276,277.32
  6. Step 6: Final answer
    x = 214,475.49

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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.