Home / 378,278.44-522,024.12-208,515.40

Finding the Fourth Proportional to 378,278.44, 522,024.12 and 208,515.40

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Solution

The fourth proportional to 378,278.44, 522,024.12 and 208,515.40 is: 287,751.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,278.44 : 522,024.12 = 208,515.40 : x
  2. Step 2: Convert to fraction form
    378,278.44/522,024.12 = 208,515.40/x
  3. Step 3: Cross multiply
    378,278.44x = 522,024.12 × 208,515.40
  4. Step 4: Simplify right side
    378,278.44x = 108,850,068,191.45
  5. Step 5: Solve for x
    x = 108,850,068,191.45/378,278.44
  6. Step 6: Final answer
    x = 287,751.18

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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.