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Finding the Fourth Proportional to 404,327.80, 606,491.70 and 358,838.20

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Solution

The fourth proportional to 404,327.80, 606,491.70 and 358,838.20 is: 538,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,327.80 : 606,491.70 = 358,838.20 : x
  2. Step 2: Convert to fraction form
    404,327.80/606,491.70 = 358,838.20/x
  3. Step 3: Cross multiply
    404,327.80x = 606,491.70 × 358,838.20
  4. Step 4: Simplify right side
    404,327.80x = 217,632,389,942.94
  5. Step 5: Solve for x
    x = 217,632,389,942.94/404,327.80
  6. Step 6: Final answer
    x = 538,257.30

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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.