Home / 221,948.32-306,289.20-121,352.80

Finding the Fourth Proportional to 221,948.32, 306,289.20 and 121,352.80

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Solution

The fourth proportional to 221,948.32, 306,289.20 and 121,352.80 is: 167,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,948.32 : 306,289.20 = 121,352.80 : x
  2. Step 2: Convert to fraction form
    221,948.32/306,289.20 = 121,352.80/x
  3. Step 3: Cross multiply
    221,948.32x = 306,289.20 × 121,352.80
  4. Step 4: Simplify right side
    221,948.32x = 37,169,052,029.76
  5. Step 5: Solve for x
    x = 37,169,052,029.76/221,948.32
  6. Step 6: Final answer
    x = 167,467.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.