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Finding the Fourth Proportional to 171,629.60, 257,444.40 and 142,469.60

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Solution

The fourth proportional to 171,629.60, 257,444.40 and 142,469.60 is: 213,704.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,629.60 : 257,444.40 = 142,469.60 : x
  2. Step 2: Convert to fraction form
    171,629.60/257,444.40 = 142,469.60/x
  3. Step 3: Cross multiply
    171,629.60x = 257,444.40 × 142,469.60
  4. Step 4: Simplify right side
    171,629.60x = 36,678,000,690.24
  5. Step 5: Solve for x
    x = 36,678,000,690.24/171,629.60
  6. Step 6: Final answer
    x = 213,704.40

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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.