Home / 257,587.31-355,473.42-142,868.23

Finding the Fourth Proportional to 257,587.31, 355,473.42 and 142,868.23

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Solution

The fourth proportional to 257,587.31, 355,473.42 and 142,868.23 is: 197,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,587.31 : 355,473.42 = 142,868.23 : x
  2. Step 2: Convert to fraction form
    257,587.31/355,473.42 = 142,868.23/x
  3. Step 3: Cross multiply
    257,587.31x = 355,473.42 × 142,868.23
  4. Step 4: Simplify right side
    257,587.31x = 50,785,858,327.45
  5. Step 5: Solve for x
    x = 50,785,858,327.45/257,587.31
  6. Step 6: Final answer
    x = 197,159.78

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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.