Home / 257,494.20-355,346.27-142,777.68

Finding the Fourth Proportional to 257,494.20, 355,346.27 and 142,777.68

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Solution

The fourth proportional to 257,494.20, 355,346.27 and 142,777.68 is: 197,035.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,494.20 : 355,346.27 = 142,777.68 : x
  2. Step 2: Convert to fraction form
    257,494.20/355,346.27 = 142,777.68/x
  3. Step 3: Cross multiply
    257,494.20x = 355,346.27 × 142,777.68
  4. Step 4: Simplify right side
    257,494.20x = 50,735,516,027.25
  5. Step 5: Solve for x
    x = 50,735,516,027.25/257,494.20
  6. Step 6: Final answer
    x = 197,035.57

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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.