Home / 257,445.83-355,296.24-142,760.43

Finding the Fourth Proportional to 257,445.83, 355,296.24 and 142,760.43

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Solution

The fourth proportional to 257,445.83, 355,296.24 and 142,760.43 is: 197,021.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,445.83 : 355,296.24 = 142,760.43 : x
  2. Step 2: Convert to fraction form
    257,445.83/355,296.24 = 142,760.43/x
  3. Step 3: Cross multiply
    257,445.83x = 355,296.24 × 142,760.43
  4. Step 4: Simplify right side
    257,445.83x = 50,722,243,999.78
  5. Step 5: Solve for x
    x = 50,722,243,999.78/257,445.83
  6. Step 6: Final answer
    x = 197,021.03

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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.