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Finding the Fourth Proportional to 304,806.03, 420,639.09 and 173,981.04

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Solution

The fourth proportional to 304,806.03, 420,639.09 and 173,981.04 is: 240,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,806.03 : 420,639.09 = 173,981.04 : x
  2. Step 2: Convert to fraction form
    304,806.03/420,639.09 = 173,981.04/x
  3. Step 3: Cross multiply
    304,806.03x = 420,639.09 × 173,981.04
  4. Step 4: Simplify right side
    304,806.03x = 73,183,226,342.85
  5. Step 5: Solve for x
    x = 73,183,226,342.85/304,806.03
  6. Step 6: Final answer
    x = 240,097.70

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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.