Home / 256,515.12-353,988.72-143,337.96

Finding the Fourth Proportional to 256,515.12, 353,988.72 and 143,337.96

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Solution

The fourth proportional to 256,515.12, 353,988.72 and 143,337.96 is: 197,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,515.12 : 353,988.72 = 143,337.96 : x
  2. Step 2: Convert to fraction form
    256,515.12/353,988.72 = 143,337.96/x
  3. Step 3: Cross multiply
    256,515.12x = 353,988.72 × 143,337.96
  4. Step 4: Simplify right side
    256,515.12x = 50,740,020,987.81
  5. Step 5: Solve for x
    x = 50,740,020,987.81/256,515.12
  6. Step 6: Final answer
    x = 197,805.19

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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.