Home / 290,903,653.28-401,455,519.35-158,753,161.78

Finding the Fourth Proportional to 290,903,653.28, 401,455,519.35 and 158,753,161.78

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Solution

The fourth proportional to 290,903,653.28, 401,455,519.35 and 158,753,161.78 is: 219,083,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,903,653.28 : 401,455,519.35 = 158,753,161.78 : x
  2. Step 2: Convert to fraction form
    290,903,653.28/401,455,519.35 = 158,753,161.78/x
  3. Step 3: Cross multiply
    290,903,653.28x = 401,455,519.35 × 158,753,161.78
  4. Step 4: Simplify right side
    290,903,653.28x = 63,732,333,010,585,384
  5. Step 5: Solve for x
    x = 63,732,333,010,585,384/290,903,653.28
  6. Step 6: Final answer
    x = 219,083,989.81

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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.