Home / 257,842.58-355,805.89-143,115.75

Finding the Fourth Proportional to 257,842.58, 355,805.89 and 143,115.75

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Solution

The fourth proportional to 257,842.58, 355,805.89 and 143,115.75 is: 197,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,842.58 : 355,805.89 = 143,115.75 : x
  2. Step 2: Convert to fraction form
    257,842.58/355,805.89 = 143,115.75/x
  3. Step 3: Cross multiply
    257,842.58x = 355,805.89 × 143,115.75
  4. Step 4: Simplify right side
    257,842.58x = 50,921,426,443.98
  5. Step 5: Solve for x
    x = 50,921,426,443.98/257,842.58
  6. Step 6: Final answer
    x = 197,490.37

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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.