Home / 638,853.15-958,072.41-212,274.42

Finding the Fourth Proportional to 638,853.15, 958,072.41 and 212,274.42

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Solution

The fourth proportional to 638,853.15, 958,072.41 and 212,274.42 is: 318,342.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,853.15 : 958,072.41 = 212,274.42 : x
  2. Step 2: Convert to fraction form
    638,853.15/958,072.41 = 212,274.42/x
  3. Step 3: Cross multiply
    638,853.15x = 958,072.41 × 212,274.42
  4. Step 4: Simplify right side
    638,853.15x = 203,374,265,150.75
  5. Step 5: Solve for x
    x = 203,374,265,150.75/638,853.15
  6. Step 6: Final answer
    x = 318,342.74

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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.