Home / 213,987.71-320,980.79-64,227.35

Finding the Fourth Proportional to 213,987.71, 320,980.79 and 64,227.35

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Solution

The fourth proportional to 213,987.71, 320,980.79 and 64,227.35 is: 96,340.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,987.71 : 320,980.79 = 64,227.35 : x
  2. Step 2: Convert to fraction form
    213,987.71/320,980.79 = 64,227.35/x
  3. Step 3: Cross multiply
    213,987.71x = 320,980.79 × 64,227.35
  4. Step 4: Simplify right side
    213,987.71x = 20,615,743,616.57
  5. Step 5: Solve for x
    x = 20,615,743,616.57/213,987.71
  6. Step 6: Final answer
    x = 96,340.79

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1.5x scale

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.