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Finding the Fourth Proportional to 270,923.62, 406,386.39 and 91,003.90

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Solution

The fourth proportional to 270,923.62, 406,386.39 and 91,003.90 is: 136,506.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,923.62 : 406,386.39 = 91,003.90 : x
  2. Step 2: Convert to fraction form
    270,923.62/406,386.39 = 91,003.90/x
  3. Step 3: Cross multiply
    270,923.62x = 406,386.39 × 91,003.90
  4. Step 4: Simplify right side
    270,923.62x = 36,982,747,627.16
  5. Step 5: Solve for x
    x = 36,982,747,627.16/270,923.62
  6. Step 6: Final answer
    x = 136,506.18

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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.