Home / 378,129.80-566,660.10-209,724.32

Finding the Fourth Proportional to 378,129.80, 566,660.10 and 209,724.32

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Solution

The fourth proportional to 378,129.80, 566,660.10 and 209,724.32 is: 314,289.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,129.80 : 566,660.10 = 209,724.32 : x
  2. Step 2: Convert to fraction form
    378,129.80/566,660.10 = 209,724.32/x
  3. Step 3: Cross multiply
    378,129.80x = 566,660.10 × 209,724.32
  4. Step 4: Simplify right side
    378,129.80x = 118,842,404,143.63
  5. Step 5: Solve for x
    x = 118,842,404,143.63/378,129.80
  6. Step 6: Final answer
    x = 314,289.97

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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.