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Finding the Fourth Proportional to 342,328.22, 472,253.76 and 221,508.48

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Solution

The fourth proportional to 342,328.22, 472,253.76 and 221,508.48 is: 305,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,328.22 : 472,253.76 = 221,508.48 : x
  2. Step 2: Convert to fraction form
    342,328.22/472,253.76 = 221,508.48/x
  3. Step 3: Cross multiply
    342,328.22x = 472,253.76 × 221,508.48
  4. Step 4: Simplify right side
    342,328.22x = 104,608,212,551.89
  5. Step 5: Solve for x
    x = 104,608,212,551.89/342,328.22
  6. Step 6: Final answer
    x = 305,578.70

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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.