Home / 326,930.78-490,393.04-193,715.15

Finding the Fourth Proportional to 326,930.78, 490,393.04 and 193,715.15

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Solution

The fourth proportional to 326,930.78, 490,393.04 and 193,715.15 is: 290,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,930.78 : 490,393.04 = 193,715.15 : x
  2. Step 2: Convert to fraction form
    326,930.78/490,393.04 = 193,715.15/x
  3. Step 3: Cross multiply
    326,930.78x = 490,393.04 × 193,715.15
  4. Step 4: Simplify right side
    326,930.78x = 94,996,557,882.02
  5. Step 5: Solve for x
    x = 94,996,557,882.02/326,930.78
  6. Step 6: Final answer
    x = 290,570.86

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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.