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Finding the Fourth Proportional to 270,306.60, 372,994.53 and 149,428.40

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Solution

The fourth proportional to 270,306.60, 372,994.53 and 149,428.40 is: 206,195.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,306.60 : 372,994.53 = 149,428.40 : x
  2. Step 2: Convert to fraction form
    270,306.60/372,994.53 = 149,428.40/x
  3. Step 3: Cross multiply
    270,306.60x = 372,994.53 × 149,428.40
  4. Step 4: Simplify right side
    270,306.60x = 55,735,975,826.65
  5. Step 5: Solve for x
    x = 55,735,975,826.65/270,306.60
  6. Step 6: Final answer
    x = 206,195.39

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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.