Home / 378,226.11-521,950.46-208,460.19

Finding the Fourth Proportional to 378,226.11, 521,950.46 and 208,460.19

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Solution

The fourth proportional to 378,226.11, 521,950.46 and 208,460.19 is: 287,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,226.11 : 521,950.46 = 208,460.19 : x
  2. Step 2: Convert to fraction form
    378,226.11/521,950.46 = 208,460.19/x
  3. Step 3: Cross multiply
    378,226.11x = 521,950.46 × 208,460.19
  4. Step 4: Simplify right side
    378,226.11x = 108,805,891,019.89
  5. Step 5: Solve for x
    x = 108,805,891,019.89/378,226.11
  6. Step 6: Final answer
    x = 287,674.19

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Double scale
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1.5x scale

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.