Home / 371,855.21-513,145.73-202,085.69

Finding the Fourth Proportional to 371,855.21, 513,145.73 and 202,085.69

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Solution

The fourth proportional to 371,855.21, 513,145.73 and 202,085.69 is: 278,870.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,855.21 : 513,145.73 = 202,085.69 : x
  2. Step 2: Convert to fraction form
    371,855.21/513,145.73 = 202,085.69/x
  3. Step 3: Cross multiply
    371,855.21x = 513,145.73 × 202,085.69
  4. Step 4: Simplify right side
    371,855.21x = 103,699,406,857.09
  5. Step 5: Solve for x
    x = 103,699,406,857.09/371,855.21
  6. Step 6: Final answer
    x = 278,870.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.