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Finding the Fourth Proportional to 342,761.02, 472,953.81 and 215,345.86

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Solution

The fourth proportional to 342,761.02, 472,953.81 and 215,345.86 is: 297,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,761.02 : 472,953.81 = 215,345.86 : x
  2. Step 2: Convert to fraction form
    342,761.02/472,953.81 = 215,345.86/x
  3. Step 3: Cross multiply
    342,761.02x = 472,953.81 × 215,345.86
  4. Step 4: Simplify right side
    342,761.02x = 101,848,644,954.73
  5. Step 5: Solve for x
    x = 101,848,644,954.73/342,761.02
  6. Step 6: Final answer
    x = 297,141.85

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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.