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Finding the Fourth Proportional to 221,211.72, 331,300.87 and 203,349.40

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Solution

The fourth proportional to 221,211.72, 331,300.87 and 203,349.40 is: 304,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,211.72 : 331,300.87 = 203,349.40 : x
  2. Step 2: Convert to fraction form
    221,211.72/331,300.87 = 203,349.40/x
  3. Step 3: Cross multiply
    221,211.72x = 331,300.87 × 203,349.40
  4. Step 4: Simplify right side
    221,211.72x = 67,369,831,797.35
  5. Step 5: Solve for x
    x = 67,369,831,797.35/221,211.72
  6. Step 6: Final answer
    x = 304,549.11

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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.