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Finding the Fourth Proportional to 489,361.20, 675,345.24 and 274,569.36

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Solution

The fourth proportional to 489,361.20, 675,345.24 and 274,569.36 is: 378,920.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,361.20 : 675,345.24 = 274,569.36 : x
  2. Step 2: Convert to fraction form
    489,361.20/675,345.24 = 274,569.36/x
  3. Step 3: Cross multiply
    489,361.20x = 675,345.24 × 274,569.36
  4. Step 4: Simplify right side
    489,361.20x = 185,429,110,325.85
  5. Step 5: Solve for x
    x = 185,429,110,325.85/489,361.20
  6. Step 6: Final answer
    x = 378,920.74

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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.