Home / 378,381.04-522,169.36-208,621.20

Finding the Fourth Proportional to 378,381.04, 522,169.36 and 208,621.20

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Solution

The fourth proportional to 378,381.04, 522,169.36 and 208,621.20 is: 287,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,381.04 : 522,169.36 = 208,621.20 : x
  2. Step 2: Convert to fraction form
    378,381.04/522,169.36 = 208,621.20/x
  3. Step 3: Cross multiply
    378,381.04x = 522,169.36 × 208,621.20
  4. Step 4: Simplify right side
    378,381.04x = 108,935,598,486.43
  5. Step 5: Solve for x
    x = 108,935,598,486.43/378,381.04
  6. Step 6: Final answer
    x = 287,899.20

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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.