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Finding the Fourth Proportional to 268,489.89, 370,517.40 and 147,638.88

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Solution

The fourth proportional to 268,489.89, 370,517.40 and 147,638.88 is: 203,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,489.89 : 370,517.40 = 147,638.88 : x
  2. Step 2: Convert to fraction form
    268,489.89/370,517.40 = 147,638.88/x
  3. Step 3: Cross multiply
    268,489.89x = 370,517.40 × 147,638.88
  4. Step 4: Simplify right side
    268,489.89x = 54,702,773,956.51
  5. Step 5: Solve for x
    x = 54,702,773,956.51/268,489.89
  6. Step 6: Final answer
    x = 203,742.40

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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.