Home / 288,016,121.52-397,463,296.20-155,857,106.08

Finding the Fourth Proportional to 288,016,121.52, 397,463,296.20 and 155,857,106.08

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Solution

The fourth proportional to 288,016,121.52, 397,463,296.20 and 155,857,106.08 is: 215,083,373.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,016,121.52 : 397,463,296.20 = 155,857,106.08 : x
  2. Step 2: Convert to fraction form
    288,016,121.52/397,463,296.20 = 155,857,106.08/x
  3. Step 3: Cross multiply
    288,016,121.52x = 397,463,296.20 × 155,857,106.08
  4. Step 4: Simplify right side
    288,016,121.52x = 61,947,479,117,981,760
  5. Step 5: Solve for x
    x = 61,947,479,117,981,760/288,016,121.52
  6. Step 6: Final answer
    x = 215,083,373.77

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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.