Home / 378,972.65-522,979.04-209,203.13

Finding the Fourth Proportional to 378,972.65, 522,979.04 and 209,203.13

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Solution

The fourth proportional to 378,972.65, 522,979.04 and 209,203.13 is: 288,698.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,972.65 : 522,979.04 = 209,203.13 : x
  2. Step 2: Convert to fraction form
    378,972.65/522,979.04 = 209,203.13/x
  3. Step 3: Cross multiply
    378,972.65x = 522,979.04 × 209,203.13
  4. Step 4: Simplify right side
    378,972.65x = 109,408,850,000.51
  5. Step 5: Solve for x
    x = 109,408,850,000.51/378,972.65
  6. Step 6: Final answer
    x = 288,698.54

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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.