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Finding the Fourth Proportional to 221,285.70, 331,928.55 and 146,490.30

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Solution

The fourth proportional to 221,285.70, 331,928.55 and 146,490.30 is: 219,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,285.70 : 331,928.55 = 146,490.30 : x
  2. Step 2: Convert to fraction form
    221,285.70/331,928.55 = 146,490.30/x
  3. Step 3: Cross multiply
    221,285.70x = 331,928.55 × 146,490.30
  4. Step 4: Simplify right side
    221,285.70x = 48,624,312,868.07
  5. Step 5: Solve for x
    x = 48,624,312,868.07/221,285.70
  6. Step 6: Final answer
    x = 219,735.45

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Similar ratio
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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.