Home / 257,851.64-355,817.42-143,121.26

Finding the Fourth Proportional to 257,851.64, 355,817.42 and 143,121.26

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Solution

The fourth proportional to 257,851.64, 355,817.42 and 143,121.26 is: 197,497.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,851.64 : 355,817.42 = 143,121.26 : x
  2. Step 2: Convert to fraction form
    257,851.64/355,817.42 = 143,121.26/x
  3. Step 3: Cross multiply
    257,851.64x = 355,817.42 × 143,121.26
  4. Step 4: Simplify right side
    257,851.64x = 50,925,034,985.66
  5. Step 5: Solve for x
    x = 50,925,034,985.66/257,851.64
  6. Step 6: Final answer
    x = 197,497.43

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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.