Home / 378,210.96-521,930.07-208,445.04

Finding the Fourth Proportional to 378,210.96, 521,930.07 and 208,445.04

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Solution

The fourth proportional to 378,210.96, 521,930.07 and 208,445.04 is: 287,653.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,210.96 : 521,930.07 = 208,445.04 : x
  2. Step 2: Convert to fraction form
    378,210.96/521,930.07 = 208,445.04/x
  3. Step 3: Cross multiply
    378,210.96x = 521,930.07 × 208,445.04
  4. Step 4: Simplify right side
    378,210.96x = 108,793,734,318.35
  5. Step 5: Solve for x
    x = 108,793,734,318.35/378,210.96
  6. Step 6: Final answer
    x = 287,653.57

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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.