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Finding the Fourth Proportional to 221,799.80, 332,181.30 and 217,345.40

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Solution

The fourth proportional to 221,799.80, 332,181.30 and 217,345.40 is: 325,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,799.80 : 332,181.30 = 217,345.40 : x
  2. Step 2: Convert to fraction form
    221,799.80/332,181.30 = 217,345.40/x
  3. Step 3: Cross multiply
    221,799.80x = 332,181.30 × 217,345.40
  4. Step 4: Simplify right side
    221,799.80x = 72,198,077,521.02
  5. Step 5: Solve for x
    x = 72,198,077,521.02/221,799.80
  6. Step 6: Final answer
    x = 325,510.11

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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.