Home / 209,918.60-314,849.10-69,662.60

Finding the Fourth Proportional to 209,918.60, 314,849.10 and 69,662.60

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Solution

The fourth proportional to 209,918.60, 314,849.10 and 69,662.60 is: 104,484.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,918.60 : 314,849.10 = 69,662.60 : x
  2. Step 2: Convert to fraction form
    209,918.60/314,849.10 = 69,662.60/x
  3. Step 3: Cross multiply
    209,918.60x = 314,849.10 × 69,662.60
  4. Step 4: Simplify right side
    209,918.60x = 21,933,206,913.66
  5. Step 5: Solve for x
    x = 21,933,206,913.66/209,918.60
  6. Step 6: Final answer
    x = 104,484.34

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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.