Home / 256,306.17-353,718.90-143,128.92

Finding the Fourth Proportional to 256,306.17, 353,718.90 and 143,128.92

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Solution

The fourth proportional to 256,306.17, 353,718.90 and 143,128.92 is: 197,527.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,306.17 : 353,718.90 = 143,128.92 : x
  2. Step 2: Convert to fraction form
    256,306.17/353,718.90 = 143,128.92/x
  3. Step 3: Cross multiply
    256,306.17x = 353,718.90 × 143,128.92
  4. Step 4: Simplify right side
    256,306.17x = 50,627,404,140.59
  5. Step 5: Solve for x
    x = 50,627,404,140.59/256,306.17
  6. Step 6: Final answer
    x = 197,527.06

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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.