Home / 338,721.95-508,083.14-86,021.39

Finding the Fourth Proportional to 338,721.95, 508,083.14 and 86,021.39

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Solution

The fourth proportional to 338,721.95, 508,083.14 and 86,021.39 is: 129,032.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,721.95 : 508,083.14 = 86,021.39 : x
  2. Step 2: Convert to fraction form
    338,721.95/508,083.14 = 86,021.39/x
  3. Step 3: Cross multiply
    338,721.95x = 508,083.14 × 86,021.39
  4. Step 4: Simplify right side
    338,721.95x = 43,706,015,613.00
  5. Step 5: Solve for x
    x = 43,706,015,613.00/338,721.95
  6. Step 6: Final answer
    x = 129,032.13

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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.