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Finding the Fourth Proportional to 201,308.40, 302,000.70 and 66,380.22

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Solution

The fourth proportional to 201,308.40, 302,000.70 and 66,380.22 is: 99,582.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,308.40 : 302,000.70 = 66,380.22 : x
  2. Step 2: Convert to fraction form
    201,308.40/302,000.70 = 66,380.22/x
  3. Step 3: Cross multiply
    201,308.40x = 302,000.70 × 66,380.22
  4. Step 4: Simplify right side
    201,308.40x = 20,046,872,906.15
  5. Step 5: Solve for x
    x = 20,046,872,906.15/201,308.40
  6. Step 6: Final answer
    x = 99,582.89

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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.