Home / 429,325,027.39-644,090,286.30-138,219,362.29

Finding the Fourth Proportional to 429,325,027.39, 644,090,286.30 and 138,219,362.29

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Solution

The fourth proportional to 429,325,027.39, 644,090,286.30 and 138,219,362.29 is: 207,362,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,325,027.39 : 644,090,286.30 = 138,219,362.29 : x
  2. Step 2: Convert to fraction form
    429,325,027.39/644,090,286.30 = 138,219,362.29/x
  3. Step 3: Cross multiply
    429,325,027.39x = 644,090,286.30 × 138,219,362.29
  4. Step 4: Simplify right side
    429,325,027.39x = 89,025,748,629,569,504
  5. Step 5: Solve for x
    x = 89,025,748,629,569,504/429,325,027.39
  6. Step 6: Final answer
    x = 207,362,121.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.