Home / 378,948.96-522,953.76-209,183.28

Finding the Fourth Proportional to 378,948.96, 522,953.76 and 209,183.28

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Solution

The fourth proportional to 378,948.96, 522,953.76 and 209,183.28 is: 288,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,948.96 : 522,953.76 = 209,183.28 : x
  2. Step 2: Convert to fraction form
    378,948.96/522,953.76 = 209,183.28/x
  3. Step 3: Cross multiply
    378,948.96x = 522,953.76 × 209,183.28
  4. Step 4: Simplify right side
    378,948.96x = 109,393,182,805.13
  5. Step 5: Solve for x
    x = 109,393,182,805.13/378,948.96
  6. Step 6: Final answer
    x = 288,675.24

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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.