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Finding the Fourth Proportional to 221,477.30, 332,215.95 and 220,165.10

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Solution

The fourth proportional to 221,477.30, 332,215.95 and 220,165.10 is: 330,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,477.30 : 332,215.95 = 220,165.10 : x
  2. Step 2: Convert to fraction form
    221,477.30/332,215.95 = 220,165.10/x
  3. Step 3: Cross multiply
    221,477.30x = 332,215.95 × 220,165.10
  4. Step 4: Simplify right side
    221,477.30x = 73,142,357,853.35
  5. Step 5: Solve for x
    x = 73,142,357,853.35/221,477.30
  6. Step 6: Final answer
    x = 330,247.65

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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.