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Finding the Fourth Proportional to 378,725.67, 522,667.04 and 217,644.93

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Solution

The fourth proportional to 378,725.67, 522,667.04 and 217,644.93 is: 300,364.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,725.67 : 522,667.04 = 217,644.93 : x
  2. Step 2: Convert to fraction form
    378,725.67/522,667.04 = 217,644.93/x
  3. Step 3: Cross multiply
    378,725.67x = 522,667.04 × 217,644.93
  4. Step 4: Simplify right side
    378,725.67x = 113,755,830,245.88
  5. Step 5: Solve for x
    x = 113,755,830,245.88/378,725.67
  6. Step 6: Final answer
    x = 300,364.72

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1.5x scale

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.