Home / 390,238.43-585,233.07-123,936.66

Finding the Fourth Proportional to 390,238.43, 585,233.07 and 123,936.66

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Solution

The fourth proportional to 390,238.43, 585,233.07 and 123,936.66 is: 185,865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,238.43 : 585,233.07 = 123,936.66 : x
  2. Step 2: Convert to fraction form
    390,238.43/585,233.07 = 123,936.66/x
  3. Step 3: Cross multiply
    390,238.43x = 585,233.07 × 123,936.66
  4. Step 4: Simplify right side
    390,238.43x = 72,531,830,952.33
  5. Step 5: Solve for x
    x = 72,531,830,952.33/390,238.43
  6. Step 6: Final answer
    x = 185,865.42

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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.