Home / 257,849.85-355,814.98-143,119.47

Finding the Fourth Proportional to 257,849.85, 355,814.98 and 143,119.47

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Solution

The fourth proportional to 257,849.85, 355,814.98 and 143,119.47 is: 197,494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,849.85 : 355,814.98 = 143,119.47 : x
  2. Step 2: Convert to fraction form
    257,849.85/355,814.98 = 143,119.47/x
  3. Step 3: Cross multiply
    257,849.85x = 355,814.98 × 143,119.47
  4. Step 4: Simplify right side
    257,849.85x = 50,924,050,997.86
  5. Step 5: Solve for x
    x = 50,924,050,997.86/257,849.85
  6. Step 6: Final answer
    x = 197,494.98

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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.