Home / 256,072.12-384,170.48-85,293.40

Finding the Fourth Proportional to 256,072.12, 384,170.48 and 85,293.40

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Solution

The fourth proportional to 256,072.12, 384,170.48 and 85,293.40 is: 127,960.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,072.12 : 384,170.48 = 85,293.40 : x
  2. Step 2: Convert to fraction form
    256,072.12/384,170.48 = 85,293.40/x
  3. Step 3: Cross multiply
    256,072.12x = 384,170.48 × 85,293.40
  4. Step 4: Simplify right side
    256,072.12x = 32,767,206,418.83
  5. Step 5: Solve for x
    x = 32,767,206,418.83/256,072.12
  6. Step 6: Final answer
    x = 127,960.85

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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.