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Finding the Fourth Proportional to 487,339.06, 731,174.54 and 262,721.20

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Solution

The fourth proportional to 487,339.06, 731,174.54 and 262,721.20 is: 394,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,339.06 : 731,174.54 = 262,721.20 : x
  2. Step 2: Convert to fraction form
    487,339.06/731,174.54 = 262,721.20/x
  3. Step 3: Cross multiply
    487,339.06x = 731,174.54 × 262,721.20
  4. Step 4: Simplify right side
    487,339.06x = 192,095,052,558.25
  5. Step 5: Solve for x
    x = 192,095,052,558.25/487,339.06
  6. Step 6: Final answer
    x = 394,171.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.