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Finding the Fourth Proportional to 210,674.78, 290,731.08 and 115,181.42

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Solution

The fourth proportional to 210,674.78, 290,731.08 and 115,181.42 is: 158,950.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,674.78 : 290,731.08 = 115,181.42 : x
  2. Step 2: Convert to fraction form
    210,674.78/290,731.08 = 115,181.42/x
  3. Step 3: Cross multiply
    210,674.78x = 290,731.08 × 115,181.42
  4. Step 4: Simplify right side
    210,674.78x = 33,486,818,632.53
  5. Step 5: Solve for x
    x = 33,486,818,632.53/210,674.78
  6. Step 6: Final answer
    x = 158,950.30

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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.