Home / 420,112.67-579,805.31-238,851.95

Finding the Fourth Proportional to 420,112.67, 579,805.31 and 238,851.95

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Solution

The fourth proportional to 420,112.67, 579,805.31 and 238,851.95 is: 329,644.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,112.67 : 579,805.31 = 238,851.95 : x
  2. Step 2: Convert to fraction form
    420,112.67/579,805.31 = 238,851.95/x
  3. Step 3: Cross multiply
    420,112.67x = 579,805.31 × 238,851.95
  4. Step 4: Simplify right side
    420,112.67x = 138,487,628,913.86
  5. Step 5: Solve for x
    x = 138,487,628,913.86/420,112.67
  6. Step 6: Final answer
    x = 329,644.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.