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Finding the Fourth Proportional to 269,969.20, 405,002.40 and 112,213.60

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Solution

The fourth proportional to 269,969.20, 405,002.40 and 112,213.60 is: 168,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,969.20 : 405,002.40 = 112,213.60 : x
  2. Step 2: Convert to fraction form
    269,969.20/405,002.40 = 112,213.60/x
  3. Step 3: Cross multiply
    269,969.20x = 405,002.40 × 112,213.60
  4. Step 4: Simplify right side
    269,969.20x = 45,446,777,312.64
  5. Step 5: Solve for x
    x = 45,446,777,312.64/269,969.20
  6. Step 6: Final answer
    x = 168,340.60

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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.