Home / 213,046.20-319,569.30-209,935.80

Finding the Fourth Proportional to 213,046.20, 319,569.30 and 209,935.80

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Solution

The fourth proportional to 213,046.20, 319,569.30 and 209,935.80 is: 314,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,046.20 : 319,569.30 = 209,935.80 : x
  2. Step 2: Convert to fraction form
    213,046.20/319,569.30 = 209,935.80/x
  3. Step 3: Cross multiply
    213,046.20x = 319,569.30 × 209,935.80
  4. Step 4: Simplify right side
    213,046.20x = 67,089,036,650.94
  5. Step 5: Solve for x
    x = 67,089,036,650.94/213,046.20
  6. Step 6: Final answer
    x = 314,903.70

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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.