Home / 278,785.40-384,721.78-151,462.04

Finding the Fourth Proportional to 278,785.40, 384,721.78 and 151,462.04

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Solution

The fourth proportional to 278,785.40, 384,721.78 and 151,462.04 is: 209,016.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,785.40 : 384,721.78 = 151,462.04 : x
  2. Step 2: Convert to fraction form
    278,785.40/384,721.78 = 151,462.04/x
  3. Step 3: Cross multiply
    278,785.40x = 384,721.78 × 151,462.04
  4. Step 4: Simplify right side
    278,785.40x = 58,270,745,631.23
  5. Step 5: Solve for x
    x = 58,270,745,631.23/278,785.40
  6. Step 6: Final answer
    x = 209,016.49

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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.