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Finding the Fourth Proportional to 307,354, 424,151.82 and 173,218

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Solution

The fourth proportional to 307,354, 424,151.82 and 173,218 is: 239,042.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,354 : 424,151.82 = 173,218 : x
  2. Step 2: Convert to fraction form
    307,354/424,151.82 = 173,218/x
  3. Step 3: Cross multiply
    307,354x = 424,151.82 × 173,218
  4. Step 4: Simplify right side
    307,354x = 73,470,729,956.76
  5. Step 5: Solve for x
    x = 73,470,729,956.76/307,354
  6. Step 6: Final answer
    x = 239,042.70

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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.