Home / 338,942.48-508,416.62-86,223.20

Finding the Fourth Proportional to 338,942.48, 508,416.62 and 86,223.20

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Solution

The fourth proportional to 338,942.48, 508,416.62 and 86,223.20 is: 129,335.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,942.48 : 508,416.62 = 86,223.20 : x
  2. Step 2: Convert to fraction form
    338,942.48/508,416.62 = 86,223.20/x
  3. Step 3: Cross multiply
    338,942.48x = 508,416.62 × 86,223.20
  4. Step 4: Simplify right side
    338,942.48x = 43,837,304,936.38
  5. Step 5: Solve for x
    x = 43,837,304,936.38/338,942.48
  6. Step 6: Final answer
    x = 129,335.53

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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.