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Finding the Fourth Proportional to 221,465.40, 332,198.10 and 154,980.60

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Solution

The fourth proportional to 221,465.40, 332,198.10 and 154,980.60 is: 232,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,465.40 : 332,198.10 = 154,980.60 : x
  2. Step 2: Convert to fraction form
    221,465.40/332,198.10 = 154,980.60/x
  3. Step 3: Cross multiply
    221,465.40x = 332,198.10 × 154,980.60
  4. Step 4: Simplify right side
    221,465.40x = 51,484,260,856.86
  5. Step 5: Solve for x
    x = 51,484,260,856.86/221,465.40
  6. Step 6: Final answer
    x = 232,470.90

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1.5x scale

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.