Home / 291,800,207.78-402,693,832.79-159,638,138.40

Finding the Fourth Proportional to 291,800,207.78, 402,693,832.79 and 159,638,138.40

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Solution

The fourth proportional to 291,800,207.78, 402,693,832.79 and 159,638,138.40 is: 220,305,853.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,800,207.78 : 402,693,832.79 = 159,638,138.40 : x
  2. Step 2: Convert to fraction form
    291,800,207.78/402,693,832.79 = 159,638,138.40/x
  3. Step 3: Cross multiply
    291,800,207.78x = 402,693,832.79 × 159,638,138.40
  4. Step 4: Simplify right side
    291,800,207.78x = 64,285,293,808,944,824
  5. Step 5: Solve for x
    x = 64,285,293,808,944,824/291,800,207.78
  6. Step 6: Final answer
    x = 220,305,853.44

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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.