Home / 378,112.40-566,002.20-219,870.80

Finding the Fourth Proportional to 378,112.40, 566,002.20 and 219,870.80

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Solution

The fourth proportional to 378,112.40, 566,002.20 and 219,870.80 is: 329,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,112.40 : 566,002.20 = 219,870.80 : x
  2. Step 2: Convert to fraction form
    378,112.40/566,002.20 = 219,870.80/x
  3. Step 3: Cross multiply
    378,112.40x = 566,002.20 × 219,870.80
  4. Step 4: Simplify right side
    378,112.40x = 124,447,356,515.76
  5. Step 5: Solve for x
    x = 124,447,356,515.76/378,112.40
  6. Step 6: Final answer
    x = 329,127.94

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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.