Home / 815,020.68-1,222,542-216,039.72

Finding the Fourth Proportional to 815,020.68, 1,222,542 and 216,039.72

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Solution

The fourth proportional to 815,020.68, 1,222,542 and 216,039.72 is: 324,062.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,020.68 : 1,222,542 = 216,039.72 : x
  2. Step 2: Convert to fraction form
    815,020.68/1,222,542 = 216,039.72/x
  3. Step 3: Cross multiply
    815,020.68x = 1,222,542 × 216,039.72
  4. Step 4: Simplify right side
    815,020.68x = 264,117,631,368.24
  5. Step 5: Solve for x
    x = 264,117,631,368.24/815,020.68
  6. Step 6: Final answer
    x = 324,062.49

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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.