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Finding the Fourth Proportional to 170,744.80, 256,155.60 and 52,421.60

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Solution

The fourth proportional to 170,744.80, 256,155.60 and 52,421.60 is: 78,644.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,744.80 : 256,155.60 = 52,421.60 : x
  2. Step 2: Convert to fraction form
    170,744.80/256,155.60 = 52,421.60/x
  3. Step 3: Cross multiply
    170,744.80x = 256,155.60 × 52,421.60
  4. Step 4: Simplify right side
    170,744.80x = 13,428,086,400.96
  5. Step 5: Solve for x
    x = 13,428,086,400.96/170,744.80
  6. Step 6: Final answer
    x = 78,644.19

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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.