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Finding the Fourth Proportional to 404,389.20, 606,972.60 and 204,934.80

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Solution

The fourth proportional to 404,389.20, 606,972.60 and 204,934.80 is: 307,599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,389.20 : 606,972.60 = 204,934.80 : x
  2. Step 2: Convert to fraction form
    404,389.20/606,972.60 = 204,934.80/x
  3. Step 3: Cross multiply
    404,389.20x = 606,972.60 × 204,934.80
  4. Step 4: Simplify right side
    404,389.20x = 124,389,808,386.48
  5. Step 5: Solve for x
    x = 124,389,808,386.48/404,389.20
  6. Step 6: Final answer
    x = 307,599.23

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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.