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Finding the Fourth Proportional to 171,605.80, 257,457.30 and 53,289.10

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Solution

The fourth proportional to 171,605.80, 257,457.30 and 53,289.10 is: 79,948.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,605.80 : 257,457.30 = 53,289.10 : x
  2. Step 2: Convert to fraction form
    171,605.80/257,457.30 = 53,289.10/x
  3. Step 3: Cross multiply
    171,605.80x = 257,457.30 × 53,289.10
  4. Step 4: Simplify right side
    171,605.80x = 13,719,667,805.43
  5. Step 5: Solve for x
    x = 13,719,667,805.43/171,605.80
  6. Step 6: Final answer
    x = 79,948.74

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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.