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Finding the Fourth Proportional to 169,214.40, 253,821.60 and 161,438.40

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Solution

The fourth proportional to 169,214.40, 253,821.60 and 161,438.40 is: 242,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,214.40 : 253,821.60 = 161,438.40 : x
  2. Step 2: Convert to fraction form
    169,214.40/253,821.60 = 161,438.40/x
  3. Step 3: Cross multiply
    169,214.40x = 253,821.60 × 161,438.40
  4. Step 4: Simplify right side
    169,214.40x = 40,976,552,989.44
  5. Step 5: Solve for x
    x = 40,976,552,989.44/169,214.40
  6. Step 6: Final answer
    x = 242,157.60

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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.