Home / 386,491.20-579,736.80-293,179.20

Finding the Fourth Proportional to 386,491.20, 579,736.80 and 293,179.20

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Solution

The fourth proportional to 386,491.20, 579,736.80 and 293,179.20 is: 439,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,491.20 : 579,736.80 = 293,179.20 : x
  2. Step 2: Convert to fraction form
    386,491.20/579,736.80 = 293,179.20/x
  3. Step 3: Cross multiply
    386,491.20x = 579,736.80 × 293,179.20
  4. Step 4: Simplify right side
    386,491.20x = 169,966,771,234.56
  5. Step 5: Solve for x
    x = 169,966,771,234.56/386,491.20
  6. Step 6: Final answer
    x = 439,768.80

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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.