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Finding the Fourth Proportional to 221,760.60, 306,023.10 and 121,158.60

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Solution

The fourth proportional to 221,760.60, 306,023.10 and 121,158.60 is: 167,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,760.60 : 306,023.10 = 121,158.60 : x
  2. Step 2: Convert to fraction form
    221,760.60/306,023.10 = 121,158.60/x
  3. Step 3: Cross multiply
    221,760.60x = 306,023.10 × 121,158.60
  4. Step 4: Simplify right side
    221,760.60x = 37,077,330,363.66
  5. Step 5: Solve for x
    x = 37,077,330,363.66/221,760.60
  6. Step 6: Final answer
    x = 167,195.30

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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.