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Finding the Fourth Proportional to 257,337.28, 355,126.28 and 142,617.80

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Solution

The fourth proportional to 257,337.28, 355,126.28 and 142,617.80 is: 196,813.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,337.28 : 355,126.28 = 142,617.80 : x
  2. Step 2: Convert to fraction form
    257,337.28/355,126.28 = 142,617.80/x
  3. Step 3: Cross multiply
    257,337.28x = 355,126.28 × 142,617.80
  4. Step 4: Simplify right side
    257,337.28x = 50,647,328,775.78
  5. Step 5: Solve for x
    x = 50,647,328,775.78/257,337.28
  6. Step 6: Final answer
    x = 196,813.03

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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.