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Finding the Fourth Proportional to 591,243.60, 886,692.60 and 212,120.40

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Solution

The fourth proportional to 591,243.60, 886,692.60 and 212,120.40 is: 318,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,243.60 : 886,692.60 = 212,120.40 : x
  2. Step 2: Convert to fraction form
    591,243.60/886,692.60 = 212,120.40/x
  3. Step 3: Cross multiply
    591,243.60x = 886,692.60 × 212,120.40
  4. Step 4: Simplify right side
    591,243.60x = 188,085,588,989.04
  5. Step 5: Solve for x
    x = 188,085,588,989.04/591,243.60
  6. Step 6: Final answer
    x = 318,118.60

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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.