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Finding the Fourth Proportional to 253,632.96, 350,013.61 and 138,918.83

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Solution

The fourth proportional to 253,632.96, 350,013.61 and 138,918.83 is: 191,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,632.96 : 350,013.61 = 138,918.83 : x
  2. Step 2: Convert to fraction form
    253,632.96/350,013.61 = 138,918.83/x
  3. Step 3: Cross multiply
    253,632.96x = 350,013.61 × 138,918.83
  4. Step 4: Simplify right side
    253,632.96x = 48,623,481,365.72
  5. Step 5: Solve for x
    x = 48,623,481,365.72/253,632.96
  6. Step 6: Final answer
    x = 191,708.05

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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.