Home / 378,166.13-521,880.20-208,411.19

Finding the Fourth Proportional to 378,166.13, 521,880.20 and 208,411.19

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Solution

The fourth proportional to 378,166.13, 521,880.20 and 208,411.19 is: 287,613.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,166.13 : 521,880.20 = 208,411.19 : x
  2. Step 2: Convert to fraction form
    378,166.13/521,880.20 = 208,411.19/x
  3. Step 3: Cross multiply
    378,166.13x = 521,880.20 × 208,411.19
  4. Step 4: Simplify right side
    378,166.13x = 108,765,669,867.98
  5. Step 5: Solve for x
    x = 108,765,669,867.98/378,166.13
  6. Step 6: Final answer
    x = 287,613.47

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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.