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Finding the Fourth Proportional to 236,781.38, 355,133.73 and 86,984.84

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Solution

The fourth proportional to 236,781.38, 355,133.73 and 86,984.84 is: 130,463.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,781.38 : 355,133.73 = 86,984.84 : x
  2. Step 2: Convert to fraction form
    236,781.38/355,133.73 = 86,984.84/x
  3. Step 3: Cross multiply
    236,781.38x = 355,133.73 × 86,984.84
  4. Step 4: Simplify right side
    236,781.38x = 30,891,250,682.65
  5. Step 5: Solve for x
    x = 30,891,250,682.65/236,781.38
  6. Step 6: Final answer
    x = 130,463.18

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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.