Home / 290,903,659.78-401,455,528.32-158,753,168.29

Finding the Fourth Proportional to 290,903,659.78, 401,455,528.32 and 158,753,168.29

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Solution

The fourth proportional to 290,903,659.78, 401,455,528.32 and 158,753,168.29 is: 219,083,998.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,903,659.78 : 401,455,528.32 = 158,753,168.29 : x
  2. Step 2: Convert to fraction form
    290,903,659.78/401,455,528.32 = 158,753,168.29/x
  3. Step 3: Cross multiply
    290,903,659.78x = 401,455,528.32 × 158,753,168.29
  4. Step 4: Simplify right side
    290,903,659.78x = 63,732,337,048,335,816
  5. Step 5: Solve for x
    x = 63,732,337,048,335,816/290,903,659.78
  6. Step 6: Final answer
    x = 219,083,998.79

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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.