Home / 257,962.11-355,982.70-143,234.79

Finding the Fourth Proportional to 257,962.11, 355,982.70 and 143,234.79

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Solution

The fourth proportional to 257,962.11, 355,982.70 and 143,234.79 is: 197,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,962.11 : 355,982.70 = 143,234.79 : x
  2. Step 2: Convert to fraction form
    257,962.11/355,982.70 = 143,234.79/x
  3. Step 3: Cross multiply
    257,962.11x = 355,982.70 × 143,234.79
  4. Step 4: Simplify right side
    257,962.11x = 50,989,107,278.13
  5. Step 5: Solve for x
    x = 50,989,107,278.13/257,962.11
  6. Step 6: Final answer
    x = 197,661.23

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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.