Home / 420,111.67-579,803.93-238,850.95

Finding the Fourth Proportional to 420,111.67, 579,803.93 and 238,850.95

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Solution

The fourth proportional to 420,111.67, 579,803.93 and 238,850.95 is: 329,642.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,111.67 : 579,803.93 = 238,850.95 : x
  2. Step 2: Convert to fraction form
    420,111.67/579,803.93 = 238,850.95/x
  3. Step 3: Cross multiply
    420,111.67x = 579,803.93 × 238,850.95
  4. Step 4: Simplify right side
    420,111.67x = 138,486,719,494.23
  5. Step 5: Solve for x
    x = 138,486,719,494.23/420,111.67
  6. Step 6: Final answer
    x = 329,642.64

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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.