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Finding the Fourth Proportional to 288,048.89, 431,935.30 and 136,119.52

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Solution

The fourth proportional to 288,048.89, 431,935.30 and 136,119.52 is: 204,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,048.89 : 431,935.30 = 136,119.52 : x
  2. Step 2: Convert to fraction form
    288,048.89/431,935.30 = 136,119.52/x
  3. Step 3: Cross multiply
    288,048.89x = 431,935.30 × 136,119.52
  4. Step 4: Simplify right side
    288,048.89x = 58,794,825,707.06
  5. Step 5: Solve for x
    x = 58,794,825,707.06/288,048.89
  6. Step 6: Final answer
    x = 204,114.05

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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.