Home / 278,943.36-418,470.72-145,883.52

Finding the Fourth Proportional to 278,943.36, 418,470.72 and 145,883.52

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Solution

The fourth proportional to 278,943.36, 418,470.72 and 145,883.52 is: 218,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,943.36 : 418,470.72 = 145,883.52 : x
  2. Step 2: Convert to fraction form
    278,943.36/418,470.72 = 145,883.52/x
  3. Step 3: Cross multiply
    278,943.36x = 418,470.72 × 145,883.52
  4. Step 4: Simplify right side
    278,943.36x = 61,047,981,650.53
  5. Step 5: Solve for x
    x = 61,047,981,650.53/278,943.36
  6. Step 6: Final answer
    x = 218,854.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.