Home / 255,179.12-381,832.51-212,954.95

Finding the Fourth Proportional to 255,179.12, 381,832.51 and 212,954.95

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Solution

The fourth proportional to 255,179.12, 381,832.51 and 212,954.95 is: 318,651.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,179.12 : 381,832.51 = 212,954.95 : x
  2. Step 2: Convert to fraction form
    255,179.12/381,832.51 = 212,954.95/x
  3. Step 3: Cross multiply
    255,179.12x = 381,832.51 × 212,954.95
  4. Step 4: Simplify right side
    255,179.12x = 81,313,123,075.42
  5. Step 5: Solve for x
    x = 81,313,123,075.42/255,179.12
  6. Step 6: Final answer
    x = 318,651.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.