Home / 276,179.90-381,124.64-155,321.15

Finding the Fourth Proportional to 276,179.90, 381,124.64 and 155,321.15

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Solution

The fourth proportional to 276,179.90, 381,124.64 and 155,321.15 is: 214,341.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,179.90 : 381,124.64 = 155,321.15 : x
  2. Step 2: Convert to fraction form
    276,179.90/381,124.64 = 155,321.15/x
  3. Step 3: Cross multiply
    276,179.90x = 381,124.64 × 155,321.15
  4. Step 4: Simplify right side
    276,179.90x = 59,196,715,860.82
  5. Step 5: Solve for x
    x = 59,196,715,860.82/276,179.90
  6. Step 6: Final answer
    x = 214,341.15

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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.