Home / 378,868.24-522,841.80-209,098.72

Finding the Fourth Proportional to 378,868.24, 522,841.80 and 209,098.72

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Solution

The fourth proportional to 378,868.24, 522,841.80 and 209,098.72 is: 288,558.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,868.24 : 522,841.80 = 209,098.72 : x
  2. Step 2: Convert to fraction form
    378,868.24/522,841.80 = 209,098.72/x
  3. Step 3: Cross multiply
    378,868.24x = 522,841.80 × 209,098.72
  4. Step 4: Simplify right side
    378,868.24x = 109,325,551,142.50
  5. Step 5: Solve for x
    x = 109,325,551,142.50/378,868.24
  6. Step 6: Final answer
    x = 288,558.24

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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.