Home / 387,620.16-581,780.96-163,146.40

Finding the Fourth Proportional to 387,620.16, 581,780.96 and 163,146.40

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Solution

The fourth proportional to 387,620.16, 581,780.96 and 163,146.40 is: 244,867.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,620.16 : 581,780.96 = 163,146.40 : x
  2. Step 2: Convert to fraction form
    387,620.16/581,780.96 = 163,146.40/x
  3. Step 3: Cross multiply
    387,620.16x = 581,780.96 × 163,146.40
  4. Step 4: Simplify right side
    387,620.16x = 94,915,469,212.54
  5. Step 5: Solve for x
    x = 94,915,469,212.54/387,620.16
  6. Step 6: Final answer
    x = 244,867.22

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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.