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Finding the Fourth Proportional to 257,085.27, 385,706.61 and 115,050.06

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Solution

The fourth proportional to 257,085.27, 385,706.61 and 115,050.06 is: 172,610.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,085.27 : 385,706.61 = 115,050.06 : x
  2. Step 2: Convert to fraction form
    257,085.27/385,706.61 = 115,050.06/x
  3. Step 3: Cross multiply
    257,085.27x = 385,706.61 × 115,050.06
  4. Step 4: Simplify right side
    257,085.27x = 44,375,568,622.90
  5. Step 5: Solve for x
    x = 44,375,568,622.90/257,085.27
  6. Step 6: Final answer
    x = 172,610.31

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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.