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Finding the Fourth Proportional to 487,468.36, 730,759.66 and 221,083.56

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Solution

The fourth proportional to 487,468.36, 730,759.66 and 221,083.56 is: 331,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,468.36 : 730,759.66 = 221,083.56 : x
  2. Step 2: Convert to fraction form
    487,468.36/730,759.66 = 221,083.56/x
  3. Step 3: Cross multiply
    487,468.36x = 730,759.66 × 221,083.56
  4. Step 4: Simplify right side
    487,468.36x = 161,558,946,584.48
  5. Step 5: Solve for x
    x = 161,558,946,584.48/487,468.36
  6. Step 6: Final answer
    x = 331,424.48

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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.