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Finding the Fourth Proportional to 210,527.79, 290,524.89 and 115,032.43

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Solution

The fourth proportional to 210,527.79, 290,524.89 and 115,032.43 is: 158,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,527.79 : 290,524.89 = 115,032.43 : x
  2. Step 2: Convert to fraction form
    210,527.79/290,524.89 = 115,032.43/x
  3. Step 3: Cross multiply
    210,527.79x = 290,524.89 × 115,032.43
  4. Step 4: Simplify right side
    210,527.79x = 33,419,784,072.18
  5. Step 5: Solve for x
    x = 33,419,784,072.18/210,527.79
  6. Step 6: Final answer
    x = 158,742.86

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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.