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Finding the Fourth Proportional to 221,954.72, 306,298.80 and 121,352.72

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Solution

The fourth proportional to 221,954.72, 306,298.80 and 121,352.72 is: 167,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,954.72 : 306,298.80 = 121,352.72 : x
  2. Step 2: Convert to fraction form
    221,954.72/306,298.80 = 121,352.72/x
  3. Step 3: Cross multiply
    221,954.72x = 306,298.80 × 121,352.72
  4. Step 4: Simplify right side
    221,954.72x = 37,170,192,512.74
  5. Step 5: Solve for x
    x = 37,170,192,512.74/221,954.72
  6. Step 6: Final answer
    x = 167,467.46

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1.5x scale

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.