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Finding the Fourth Proportional to 487,072.10, 730,608.15 and 221,351.60

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Solution

The fourth proportional to 487,072.10, 730,608.15 and 221,351.60 is: 332,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,072.10 : 730,608.15 = 221,351.60 : x
  2. Step 2: Convert to fraction form
    487,072.10/730,608.15 = 221,351.60/x
  3. Step 3: Cross multiply
    487,072.10x = 730,608.15 × 221,351.60
  4. Step 4: Simplify right side
    487,072.10x = 161,721,282,975.54
  5. Step 5: Solve for x
    x = 161,721,282,975.54/487,072.10
  6. Step 6: Final answer
    x = 332,027.40

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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.