Home / 378,121.05-566,646.98-209,715.57

Finding the Fourth Proportional to 378,121.05, 566,646.98 and 209,715.57

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Solution

The fourth proportional to 378,121.05, 566,646.98 and 209,715.57 is: 314,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,121.05 : 566,646.98 = 209,715.57 : x
  2. Step 2: Convert to fraction form
    378,121.05/566,646.98 = 209,715.57/x
  3. Step 3: Cross multiply
    378,121.05x = 566,646.98 × 209,715.57
  4. Step 4: Simplify right side
    378,121.05x = 118,834,693,350.90
  5. Step 5: Solve for x
    x = 118,834,693,350.90/378,121.05
  6. Step 6: Final answer
    x = 314,276.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.