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Finding the Fourth Proportional to 242,449.48, 334,579.44 and 135,020.80

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Solution

The fourth proportional to 242,449.48, 334,579.44 and 135,020.80 is: 186,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,449.48 : 334,579.44 = 135,020.80 : x
  2. Step 2: Convert to fraction form
    242,449.48/334,579.44 = 135,020.80/x
  3. Step 3: Cross multiply
    242,449.48x = 334,579.44 × 135,020.80
  4. Step 4: Simplify right side
    242,449.48x = 45,175,183,652.35
  5. Step 5: Solve for x
    x = 45,175,183,652.35/242,449.48
  6. Step 6: Final answer
    x = 186,328.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.