Home / 296,864.38-445,449.66-139,108.78

Finding the Fourth Proportional to 296,864.38, 445,449.66 and 139,108.78

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Solution

The fourth proportional to 296,864.38, 445,449.66 and 139,108.78 is: 208,734.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,864.38 : 445,449.66 = 139,108.78 : x
  2. Step 2: Convert to fraction form
    296,864.38/445,449.66 = 139,108.78/x
  3. Step 3: Cross multiply
    296,864.38x = 445,449.66 × 139,108.78
  4. Step 4: Simplify right side
    296,864.38x = 61,965,958,754.01
  5. Step 5: Solve for x
    x = 61,965,958,754.01/296,864.38
  6. Step 6: Final answer
    x = 208,734.91

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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.