Home / 278,867.52-384,836.16-158,031.81

Finding the Fourth Proportional to 278,867.52, 384,836.16 and 158,031.81

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Solution

The fourth proportional to 278,867.52, 384,836.16 and 158,031.81 is: 218,083.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,867.52 : 384,836.16 = 158,031.81 : x
  2. Step 2: Convert to fraction form
    278,867.52/384,836.16 = 158,031.81/x
  3. Step 3: Cross multiply
    278,867.52x = 384,836.16 × 158,031.81
  4. Step 4: Simplify right side
    278,867.52x = 60,816,354,918.25
  5. Step 5: Solve for x
    x = 60,816,354,918.25/278,867.52
  6. Step 6: Final answer
    x = 218,083.32

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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.