Home / 215,982,688.64-298,055,917.68-121,916,635.36

Finding the Fourth Proportional to 215,982,688.64, 298,055,917.68 and 121,916,635.36

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Solution

The fourth proportional to 215,982,688.64, 298,055,917.68 and 121,916,635.36 is: 168,244,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,982,688.64 : 298,055,917.68 = 121,916,635.36 : x
  2. Step 2: Convert to fraction form
    215,982,688.64/298,055,917.68 = 121,916,635.36/x
  3. Step 3: Cross multiply
    215,982,688.64x = 298,055,917.68 × 121,916,635.36
  4. Step 4: Simplify right side
    215,982,688.64x = 36,337,974,632,682,736
  5. Step 5: Solve for x
    x = 36,337,974,632,682,736/215,982,688.64
  6. Step 6: Final answer
    x = 168,244,848.05

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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.