Home / 340,108.20-509,579.10-221,718.60

Finding the Fourth Proportional to 340,108.20, 509,579.10 and 221,718.60

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Solution

The fourth proportional to 340,108.20, 509,579.10 and 221,718.60 is: 332,197.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,108.20 : 509,579.10 = 221,718.60 : x
  2. Step 2: Convert to fraction form
    340,108.20/509,579.10 = 221,718.60/x
  3. Step 3: Cross multiply
    340,108.20x = 509,579.10 × 221,718.60
  4. Step 4: Simplify right side
    340,108.20x = 112,983,164,641.26
  5. Step 5: Solve for x
    x = 112,983,164,641.26/340,108.20
  6. Step 6: Final answer
    x = 332,197.71

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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.