Home / 209,979.05-314,969.80-52,207.51

Finding the Fourth Proportional to 209,979.05, 314,969.80 and 52,207.51

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Solution

The fourth proportional to 209,979.05, 314,969.80 and 52,207.51 is: 78,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,979.05 : 314,969.80 = 52,207.51 : x
  2. Step 2: Convert to fraction form
    209,979.05/314,969.80 = 52,207.51/x
  3. Step 3: Cross multiply
    209,979.05x = 314,969.80 × 52,207.51
  4. Step 4: Simplify right side
    209,979.05x = 16,443,787,866.65
  5. Step 5: Solve for x
    x = 16,443,787,866.65/209,979.05
  6. Step 6: Final answer
    x = 78,311.56

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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.