Home / 257,387.16-355,197.78-144,207.48

Finding the Fourth Proportional to 257,387.16, 355,197.78 and 144,207.48

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Solution

The fourth proportional to 257,387.16, 355,197.78 and 144,207.48 is: 199,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,387.16 : 355,197.78 = 144,207.48 : x
  2. Step 2: Convert to fraction form
    257,387.16/355,197.78 = 144,207.48/x
  3. Step 3: Cross multiply
    257,387.16x = 355,197.78 × 144,207.48
  4. Step 4: Simplify right side
    257,387.16x = 51,222,176,755.39
  5. Step 5: Solve for x
    x = 51,222,176,755.39/257,387.16
  6. Step 6: Final answer
    x = 199,008.28

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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.