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Finding the Fourth Proportional to 171,464.60, 257,237.40 and 71,569.28

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Solution

The fourth proportional to 171,464.60, 257,237.40 and 71,569.28 is: 107,370.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,464.60 : 257,237.40 = 71,569.28 : x
  2. Step 2: Convert to fraction form
    171,464.60/257,237.40 = 71,569.28/x
  3. Step 3: Cross multiply
    171,464.60x = 257,237.40 × 71,569.28
  4. Step 4: Simplify right side
    171,464.60x = 18,410,295,507.07
  5. Step 5: Solve for x
    x = 18,410,295,507.07/171,464.60
  6. Step 6: Final answer
    x = 107,370.82

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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.