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Finding the Fourth Proportional to 342,173.77, 472,042.86 and 221,354.02

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Solution

The fourth proportional to 342,173.77, 472,042.86 and 221,354.02 is: 305,367.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,173.77 : 472,042.86 = 221,354.02 : x
  2. Step 2: Convert to fraction form
    342,173.77/472,042.86 = 221,354.02/x
  3. Step 3: Cross multiply
    342,173.77x = 472,042.86 × 221,354.02
  4. Step 4: Simplify right side
    342,173.77x = 104,488,584,433.27
  5. Step 5: Solve for x
    x = 104,488,584,433.27/342,173.77
  6. Step 6: Final answer
    x = 305,367.02

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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.