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Finding the Fourth Proportional to 561,940.43, 775,477.44 and 307,291.61

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Solution

The fourth proportional to 561,940.43, 775,477.44 and 307,291.61 is: 424,062.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,940.43 : 775,477.44 = 307,291.61 : x
  2. Step 2: Convert to fraction form
    561,940.43/775,477.44 = 307,291.61/x
  3. Step 3: Cross multiply
    561,940.43x = 775,477.44 × 307,291.61
  4. Step 4: Simplify right side
    561,940.43x = 238,297,707,178.89
  5. Step 5: Solve for x
    x = 238,297,707,178.89/561,940.43
  6. Step 6: Final answer
    x = 424,062.23

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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.