Home / 211,942.80-317,716.56-71,603.28

Finding the Fourth Proportional to 211,942.80, 317,716.56 and 71,603.28

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Solution

The fourth proportional to 211,942.80, 317,716.56 and 71,603.28 is: 107,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,942.80 : 317,716.56 = 71,603.28 : x
  2. Step 2: Convert to fraction form
    211,942.80/317,716.56 = 71,603.28/x
  3. Step 3: Cross multiply
    211,942.80x = 317,716.56 × 71,603.28
  4. Step 4: Simplify right side
    211,942.80x = 22,749,547,806.32
  5. Step 5: Solve for x
    x = 22,749,547,806.32/211,942.80
  6. Step 6: Final answer
    x = 107,338.15

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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.