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Finding the Fourth Proportional to 531,758.18, 797,791.72 and 171,921.36

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Solution

The fourth proportional to 531,758.18, 797,791.72 and 171,921.36 is: 257,931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,758.18 : 797,791.72 = 171,921.36 : x
  2. Step 2: Convert to fraction form
    531,758.18/797,791.72 = 171,921.36/x
  3. Step 3: Cross multiply
    531,758.18x = 797,791.72 × 171,921.36
  4. Step 4: Simplify right side
    531,758.18x = 137,157,437,499.14
  5. Step 5: Solve for x
    x = 137,157,437,499.14/531,758.18
  6. Step 6: Final answer
    x = 257,931.97

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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.