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Finding the Fourth Proportional to 268,709.92, 370,780.56 and 161,257.12

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Solution

The fourth proportional to 268,709.92, 370,780.56 and 161,257.12 is: 222,511.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,709.92 : 370,780.56 = 161,257.12 : x
  2. Step 2: Convert to fraction form
    268,709.92/370,780.56 = 161,257.12/x
  3. Step 3: Cross multiply
    268,709.92x = 370,780.56 × 161,257.12
  4. Step 4: Simplify right side
    268,709.92x = 59,791,005,257.59
  5. Step 5: Solve for x
    x = 59,791,005,257.59/268,709.92
  6. Step 6: Final answer
    x = 222,511.34

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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.