Home / 420,204-579,849.04-238,918.20

Finding the Fourth Proportional to 420,204, 579,849.04 and 238,918.20

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Solution

The fourth proportional to 420,204, 579,849.04 and 238,918.20 is: 329,688.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,204 : 579,849.04 = 238,918.20 : x
  2. Step 2: Convert to fraction form
    420,204/579,849.04 = 238,918.20/x
  3. Step 3: Cross multiply
    420,204x = 579,849.04 × 238,918.20
  4. Step 4: Simplify right side
    420,204x = 138,536,488,908.53
  5. Step 5: Solve for x
    x = 138,536,488,908.53/420,204
  6. Step 6: Final answer
    x = 329,688.65

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1.5x scale

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.