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Finding the Fourth Proportional to 550,351.37, 759,340.53 and 317,721.39

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Solution

The fourth proportional to 550,351.37, 759,340.53 and 317,721.39 is: 438,372.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,351.37 : 759,340.53 = 317,721.39 : x
  2. Step 2: Convert to fraction form
    550,351.37/759,340.53 = 317,721.39/x
  3. Step 3: Cross multiply
    550,351.37x = 759,340.53 × 317,721.39
  4. Step 4: Simplify right side
    550,351.37x = 241,258,729,866.39
  5. Step 5: Solve for x
    x = 241,258,729,866.39/550,351.37
  6. Step 6: Final answer
    x = 438,372.18

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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.