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Finding the Fourth Proportional to 163,612.20, 245,418.30 and 161,279.40

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Solution

The fourth proportional to 163,612.20, 245,418.30 and 161,279.40 is: 241,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,612.20 : 245,418.30 = 161,279.40 : x
  2. Step 2: Convert to fraction form
    163,612.20/245,418.30 = 161,279.40/x
  3. Step 3: Cross multiply
    163,612.20x = 245,418.30 × 161,279.40
  4. Step 4: Simplify right side
    163,612.20x = 39,580,916,173.02
  5. Step 5: Solve for x
    x = 39,580,916,173.02/163,612.20
  6. Step 6: Final answer
    x = 241,919.10

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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.