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Finding the Fourth Proportional to 171,656.30, 257,484.45 and 164,657.90

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Solution

The fourth proportional to 171,656.30, 257,484.45 and 164,657.90 is: 246,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,656.30 : 257,484.45 = 164,657.90 : x
  2. Step 2: Convert to fraction form
    171,656.30/257,484.45 = 164,657.90/x
  3. Step 3: Cross multiply
    171,656.30x = 257,484.45 × 164,657.90
  4. Step 4: Simplify right side
    171,656.30x = 42,396,848,819.66
  5. Step 5: Solve for x
    x = 42,396,848,819.66/171,656.30
  6. Step 6: Final answer
    x = 246,986.85

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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.