Home / 638,731.56-958,171.32-212,305.44

Finding the Fourth Proportional to 638,731.56, 958,171.32 and 212,305.44

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Solution

The fourth proportional to 638,731.56, 958,171.32 and 212,305.44 is: 318,482.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,731.56 : 958,171.32 = 212,305.44 : x
  2. Step 2: Convert to fraction form
    638,731.56/958,171.32 = 212,305.44/x
  3. Step 3: Cross multiply
    638,731.56x = 958,171.32 × 212,305.44
  4. Step 4: Simplify right side
    638,731.56x = 203,424,983,687.98
  5. Step 5: Solve for x
    x = 203,424,983,687.98/638,731.56
  6. Step 6: Final answer
    x = 318,482.75

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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.