Home / 221,947.32-306,287.82-121,351.80

Finding the Fourth Proportional to 221,947.32, 306,287.82 and 121,351.80

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Solution

The fourth proportional to 221,947.32, 306,287.82 and 121,351.80 is: 167,465.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,947.32 : 306,287.82 = 121,351.80 : x
  2. Step 2: Convert to fraction form
    221,947.32/306,287.82 = 121,351.80/x
  3. Step 3: Cross multiply
    221,947.32x = 306,287.82 × 121,351.80
  4. Step 4: Simplify right side
    221,947.32x = 37,168,578,275.08
  5. Step 5: Solve for x
    x = 37,168,578,275.08/221,947.32
  6. Step 6: Final answer
    x = 167,465.77

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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.