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Finding the Fourth Proportional to 257,601.26, 355,493.43 and 155,612.57

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Solution

The fourth proportional to 257,601.26, 355,493.43 and 155,612.57 is: 214,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,601.26 : 355,493.43 = 155,612.57 : x
  2. Step 2: Convert to fraction form
    257,601.26/355,493.43 = 155,612.57/x
  3. Step 3: Cross multiply
    257,601.26x = 355,493.43 × 155,612.57
  4. Step 4: Simplify right side
    257,601.26x = 55,319,245,920.43
  5. Step 5: Solve for x
    x = 55,319,245,920.43/257,601.26
  6. Step 6: Final answer
    x = 214,747.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.