Home / 209,979.73-314,420.55-115,012.36

Finding the Fourth Proportional to 209,979.73, 314,420.55 and 115,012.36

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Solution

The fourth proportional to 209,979.73, 314,420.55 and 115,012.36 is: 172,217.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,979.73 : 314,420.55 = 115,012.36 : x
  2. Step 2: Convert to fraction form
    209,979.73/314,420.55 = 115,012.36/x
  3. Step 3: Cross multiply
    209,979.73x = 314,420.55 × 115,012.36
  4. Step 4: Simplify right side
    209,979.73x = 36,162,249,488.00
  5. Step 5: Solve for x
    x = 36,162,249,488.00/209,979.73
  6. Step 6: Final answer
    x = 172,217.81

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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.