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Finding the Fourth Proportional to 342,337.64, 472,266.74 and 221,517.92

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Solution

The fourth proportional to 342,337.64, 472,266.74 and 221,517.92 is: 305,591.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,337.64 : 472,266.74 = 221,517.92 : x
  2. Step 2: Convert to fraction form
    342,337.64/472,266.74 = 221,517.92/x
  3. Step 3: Cross multiply
    342,337.64x = 472,266.74 × 221,517.92
  4. Step 4: Simplify right side
    342,337.64x = 104,615,544,822.39
  5. Step 5: Solve for x
    x = 104,615,544,822.39/342,337.64
  6. Step 6: Final answer
    x = 305,591.71

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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.