Home / 256,747.68-354,312-143,570.88

Finding the Fourth Proportional to 256,747.68, 354,312 and 143,570.88

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Solution

The fourth proportional to 256,747.68, 354,312 and 143,570.88 is: 198,127.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,747.68 : 354,312 = 143,570.88 : x
  2. Step 2: Convert to fraction form
    256,747.68/354,312 = 143,570.88/x
  3. Step 3: Cross multiply
    256,747.68x = 354,312 × 143,570.88
  4. Step 4: Simplify right side
    256,747.68x = 50,868,885,634.56
  5. Step 5: Solve for x
    x = 50,868,885,634.56/256,747.68
  6. Step 6: Final answer
    x = 198,127.93

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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.