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Finding the Fourth Proportional to 237,138.80, 355,586.60 and 70,905.20

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Solution

The fourth proportional to 237,138.80, 355,586.60 and 70,905.20 is: 106,321.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,138.80 : 355,586.60 = 70,905.20 : x
  2. Step 2: Convert to fraction form
    237,138.80/355,586.60 = 70,905.20/x
  3. Step 3: Cross multiply
    237,138.80x = 355,586.60 × 70,905.20
  4. Step 4: Simplify right side
    237,138.80x = 25,212,938,990.32
  5. Step 5: Solve for x
    x = 25,212,938,990.32/237,138.80
  6. Step 6: Final answer
    x = 106,321.44

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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.