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Finding the Fourth Proportional to 258,175.60, 387,085.80 and 131,570.80

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Solution

The fourth proportional to 258,175.60, 387,085.80 and 131,570.80 is: 197,265.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,175.60 : 387,085.80 = 131,570.80 : x
  2. Step 2: Convert to fraction form
    258,175.60/387,085.80 = 131,570.80/x
  3. Step 3: Cross multiply
    258,175.60x = 387,085.80 × 131,570.80
  4. Step 4: Simplify right side
    258,175.60x = 50,929,188,374.64
  5. Step 5: Solve for x
    x = 50,929,188,374.64/258,175.60
  6. Step 6: Final answer
    x = 197,265.69

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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.