Home / 378,128.80-566,658.60-209,723.32

Finding the Fourth Proportional to 378,128.80, 566,658.60 and 209,723.32

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Solution

The fourth proportional to 378,128.80, 566,658.60 and 209,723.32 is: 314,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,128.80 : 566,658.60 = 209,723.32 : x
  2. Step 2: Convert to fraction form
    378,128.80/566,658.60 = 209,723.32/x
  3. Step 3: Cross multiply
    378,128.80x = 566,658.60 × 209,723.32
  4. Step 4: Simplify right side
    378,128.80x = 118,841,522,898.55
  5. Step 5: Solve for x
    x = 118,841,522,898.55/378,128.80
  6. Step 6: Final answer
    x = 314,288.47

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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.