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Finding the Fourth Proportional to 268,489.89, 370,517.40 and 147,638.97

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Solution

The fourth proportional to 268,489.89, 370,517.40 and 147,638.97 is: 203,742.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,489.89 : 370,517.40 = 147,638.97 : x
  2. Step 2: Convert to fraction form
    268,489.89/370,517.40 = 147,638.97/x
  3. Step 3: Cross multiply
    268,489.89x = 370,517.40 × 147,638.97
  4. Step 4: Simplify right side
    268,489.89x = 54,702,807,303.08
  5. Step 5: Solve for x
    x = 54,702,807,303.08/268,489.89
  6. Step 6: Final answer
    x = 203,742.52

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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.