Home / 257,286.48-355,046.64-142,560.24

Finding the Fourth Proportional to 257,286.48, 355,046.64 and 142,560.24

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Solution

The fourth proportional to 257,286.48, 355,046.64 and 142,560.24 is: 196,728.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,286.48 : 355,046.64 = 142,560.24 : x
  2. Step 2: Convert to fraction form
    257,286.48/355,046.64 = 142,560.24/x
  3. Step 3: Cross multiply
    257,286.48x = 355,046.64 × 142,560.24
  4. Step 4: Simplify right side
    257,286.48x = 50,615,534,209.59
  5. Step 5: Solve for x
    x = 50,615,534,209.59/257,286.48
  6. Step 6: Final answer
    x = 196,728.31

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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.