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Finding the Fourth Proportional to 322,770.60, 483,810.30 and 145,247.40

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Solution

The fourth proportional to 322,770.60, 483,810.30 and 145,247.40 is: 217,715.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,770.60 : 483,810.30 = 145,247.40 : x
  2. Step 2: Convert to fraction form
    322,770.60/483,810.30 = 145,247.40/x
  3. Step 3: Cross multiply
    322,770.60x = 483,810.30 × 145,247.40
  4. Step 4: Simplify right side
    322,770.60x = 70,272,188,168.22
  5. Step 5: Solve for x
    x = 70,272,188,168.22/322,770.60
  6. Step 6: Final answer
    x = 217,715.58

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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.