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Finding the Fourth Proportional to 201,912.50, 302,956.20 and 108,308.90

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Solution

The fourth proportional to 201,912.50, 302,956.20 and 108,308.90 is: 162,510.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,912.50 : 302,956.20 = 108,308.90 : x
  2. Step 2: Convert to fraction form
    201,912.50/302,956.20 = 108,308.90/x
  3. Step 3: Cross multiply
    201,912.50x = 302,956.20 × 108,308.90
  4. Step 4: Simplify right side
    201,912.50x = 32,812,852,770.18
  5. Step 5: Solve for x
    x = 32,812,852,770.18/201,912.50
  6. Step 6: Final answer
    x = 162,510.26

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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.