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Finding the Fourth Proportional to 256,238.80, 353,602.20 and 143,059.12

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Solution

The fourth proportional to 256,238.80, 353,602.20 and 143,059.12 is: 197,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,238.80 : 353,602.20 = 143,059.12 : x
  2. Step 2: Convert to fraction form
    256,238.80/353,602.20 = 143,059.12/x
  3. Step 3: Cross multiply
    256,238.80x = 353,602.20 × 143,059.12
  4. Step 4: Simplify right side
    256,238.80x = 50,586,019,562.06
  5. Step 5: Solve for x
    x = 50,586,019,562.06/256,238.80
  6. Step 6: Final answer
    x = 197,417.49

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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.