Home / 213,680.37-320,565.93-80,557.41

Finding the Fourth Proportional to 213,680.37, 320,565.93 and 80,557.41

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Solution

The fourth proportional to 213,680.37, 320,565.93 and 80,557.41 is: 120,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,680.37 : 320,565.93 = 80,557.41 : x
  2. Step 2: Convert to fraction form
    213,680.37/320,565.93 = 80,557.41/x
  3. Step 3: Cross multiply
    213,680.37x = 320,565.93 × 80,557.41
  4. Step 4: Simplify right side
    213,680.37x = 25,823,961,055.04
  5. Step 5: Solve for x
    x = 25,823,961,055.04/213,680.37
  6. Step 6: Final answer
    x = 120,853.22

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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.