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Finding the Fourth Proportional to 664,622.52, 997,090.92 and 215,342.64

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Solution

The fourth proportional to 664,622.52, 997,090.92 and 215,342.64 is: 323,064.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,622.52 : 997,090.92 = 215,342.64 : x
  2. Step 2: Convert to fraction form
    664,622.52/997,090.92 = 215,342.64/x
  3. Step 3: Cross multiply
    664,622.52x = 997,090.92 × 215,342.64
  4. Step 4: Simplify right side
    664,622.52x = 214,716,191,032.83
  5. Step 5: Solve for x
    x = 214,716,191,032.83/664,622.52
  6. Step 6: Final answer
    x = 323,064.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.