Home / 257,973.87-355,991.97-143,259.80

Finding the Fourth Proportional to 257,973.87, 355,991.97 and 143,259.80

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Solution

The fourth proportional to 257,973.87, 355,991.97 and 143,259.80 is: 197,691.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,973.87 : 355,991.97 = 143,259.80 : x
  2. Step 2: Convert to fraction form
    257,973.87/355,991.97 = 143,259.80/x
  3. Step 3: Cross multiply
    257,973.87x = 355,991.97 × 143,259.80
  4. Step 4: Simplify right side
    257,973.87x = 50,999,337,181.07
  5. Step 5: Solve for x
    x = 50,999,337,181.07/257,973.87
  6. Step 6: Final answer
    x = 197,691.87

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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.