Home / 209,490.89-314,236.98-51,719.36

Finding the Fourth Proportional to 209,490.89, 314,236.98 and 51,719.36

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Solution

The fourth proportional to 209,490.89, 314,236.98 and 51,719.36 is: 77,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,490.89 : 314,236.98 = 51,719.36 : x
  2. Step 2: Convert to fraction form
    209,490.89/314,236.98 = 51,719.36/x
  3. Step 3: Cross multiply
    209,490.89x = 314,236.98 × 51,719.36
  4. Step 4: Simplify right side
    209,490.89x = 16,252,135,493.93
  5. Step 5: Solve for x
    x = 16,252,135,493.93/209,490.89
  6. Step 6: Final answer
    x = 77,579.20

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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.