Home / 256,513.50-353,988.63-143,346.78

Finding the Fourth Proportional to 256,513.50, 353,988.63 and 143,346.78

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Solution

The fourth proportional to 256,513.50, 353,988.63 and 143,346.78 is: 197,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,513.50 : 353,988.63 = 143,346.78 : x
  2. Step 2: Convert to fraction form
    256,513.50/353,988.63 = 143,346.78/x
  3. Step 3: Cross multiply
    256,513.50x = 353,988.63 × 143,346.78
  4. Step 4: Simplify right side
    256,513.50x = 50,743,130,267.11
  5. Step 5: Solve for x
    x = 50,743,130,267.11/256,513.50
  6. Step 6: Final answer
    x = 197,818.56

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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.