Home / 257,344.19-355,049.87-155,330.90

Finding the Fourth Proportional to 257,344.19, 355,049.87 and 155,330.90

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Solution

The fourth proportional to 257,344.19, 355,049.87 and 155,330.90 is: 214,305.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,344.19 : 355,049.87 = 155,330.90 : x
  2. Step 2: Convert to fraction form
    257,344.19/355,049.87 = 155,330.90/x
  3. Step 3: Cross multiply
    257,344.19x = 355,049.87 × 155,330.90
  4. Step 4: Simplify right side
    257,344.19x = 55,150,214,631.52
  5. Step 5: Solve for x
    x = 55,150,214,631.52/257,344.19
  6. Step 6: Final answer
    x = 214,305.27

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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.