Home / 215,981,668.88-298,054,509.96-121,915,616.48

Finding the Fourth Proportional to 215,981,668.88, 298,054,509.96 and 121,915,616.48

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Solution

The fourth proportional to 215,981,668.88, 298,054,509.96 and 121,915,616.48 is: 168,243,441.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,981,668.88 : 298,054,509.96 = 121,915,616.48 : x
  2. Step 2: Convert to fraction form
    215,981,668.88/298,054,509.96 = 121,915,616.48/x
  3. Step 3: Cross multiply
    215,981,668.88x = 298,054,509.96 × 121,915,616.48
  4. Step 4: Simplify right side
    215,981,668.88x = 36,337,499,326,417,696
  5. Step 5: Solve for x
    x = 36,337,499,326,417,696/215,981,668.88
  6. Step 6: Final answer
    x = 168,243,441.75

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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.