Home / 257,736.80-355,659.68-143,008.16

Finding the Fourth Proportional to 257,736.80, 355,659.68 and 143,008.16

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Solution

The fourth proportional to 257,736.80, 355,659.68 and 143,008.16 is: 197,341.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,736.80 : 355,659.68 = 143,008.16 : x
  2. Step 2: Convert to fraction form
    257,736.80/355,659.68 = 143,008.16/x
  3. Step 3: Cross multiply
    257,736.80x = 355,659.68 × 143,008.16
  4. Step 4: Simplify right side
    257,736.80x = 50,862,237,669.66
  5. Step 5: Solve for x
    x = 50,862,237,669.66/257,736.80
  6. Step 6: Final answer
    x = 197,341.78

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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.