Home / 318,221.85-439,161.94-197,402.07

Finding the Fourth Proportional to 318,221.85, 439,161.94 and 197,402.07

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Solution

The fourth proportional to 318,221.85, 439,161.94 and 197,402.07 is: 272,424.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,221.85 : 439,161.94 = 197,402.07 : x
  2. Step 2: Convert to fraction form
    318,221.85/439,161.94 = 197,402.07/x
  3. Step 3: Cross multiply
    318,221.85x = 439,161.94 × 197,402.07
  4. Step 4: Simplify right side
    318,221.85x = 86,691,476,021.22
  5. Step 5: Solve for x
    x = 86,691,476,021.22/318,221.85
  6. Step 6: Final answer
    x = 272,424.65

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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.