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Finding the Fourth Proportional to 404,299.75, 606,478.80 and 154,981.75

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Solution

The fourth proportional to 404,299.75, 606,478.80 and 154,981.75 is: 232,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,299.75 : 606,478.80 = 154,981.75 : x
  2. Step 2: Convert to fraction form
    404,299.75/606,478.80 = 154,981.75/x
  3. Step 3: Cross multiply
    404,299.75x = 606,478.80 × 154,981.75
  4. Step 4: Simplify right side
    404,299.75x = 93,993,145,761.90
  5. Step 5: Solve for x
    x = 93,993,145,761.90/404,299.75
  6. Step 6: Final answer
    x = 232,483.81

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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.