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Finding the Fourth Proportional to 171,465.60, 257,238.90 and 71,570.28

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Solution

The fourth proportional to 171,465.60, 257,238.90 and 71,570.28 is: 107,372.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,465.60 : 257,238.90 = 71,570.28 : x
  2. Step 2: Convert to fraction form
    171,465.60/257,238.90 = 71,570.28/x
  3. Step 3: Cross multiply
    171,465.60x = 257,238.90 × 71,570.28
  4. Step 4: Simplify right side
    171,465.60x = 18,410,660,099.89
  5. Step 5: Solve for x
    x = 18,410,660,099.89/171,465.60
  6. Step 6: Final answer
    x = 107,372.32

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1.5x scale

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.