Home / 326,721.20-490,081.80-214,746.80

Finding the Fourth Proportional to 326,721.20, 490,081.80 and 214,746.80

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Solution

The fourth proportional to 326,721.20, 490,081.80 and 214,746.80 is: 322,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,721.20 : 490,081.80 = 214,746.80 : x
  2. Step 2: Convert to fraction form
    326,721.20/490,081.80 = 214,746.80/x
  3. Step 3: Cross multiply
    326,721.20x = 490,081.80 × 214,746.80
  4. Step 4: Simplify right side
    326,721.20x = 105,243,498,288.24
  5. Step 5: Solve for x
    x = 105,243,498,288.24/326,721.20
  6. Step 6: Final answer
    x = 322,120.20

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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.