Home / 397,423,778.60-548,444,839.76-221,207,980.52

Finding the Fourth Proportional to 397,423,778.60, 548,444,839.76 and 221,207,980.52

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Solution

The fourth proportional to 397,423,778.60, 548,444,839.76 and 221,207,980.52 is: 305,267,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,423,778.60 : 548,444,839.76 = 221,207,980.52 : x
  2. Step 2: Convert to fraction form
    397,423,778.60/548,444,839.76 = 221,207,980.52/x
  3. Step 3: Cross multiply
    397,423,778.60x = 548,444,839.76 × 221,207,980.52
  4. Step 4: Simplify right side
    397,423,778.60x = 121,320,375,429,924,608
  5. Step 5: Solve for x
    x = 121,320,375,429,924,608/397,423,778.60
  6. Step 6: Final answer
    x = 305,267,027.20

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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.