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Finding the Fourth Proportional to 543,790.60, 815,801.10 and 164,680.20

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Solution

The fourth proportional to 543,790.60, 815,801.10 and 164,680.20 is: 247,055.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,790.60 : 815,801.10 = 164,680.20 : x
  2. Step 2: Convert to fraction form
    543,790.60/815,801.10 = 164,680.20/x
  3. Step 3: Cross multiply
    543,790.60x = 815,801.10 × 164,680.20
  4. Step 4: Simplify right side
    543,790.60x = 134,346,288,308.22
  5. Step 5: Solve for x
    x = 134,346,288,308.22/543,790.60
  6. Step 6: Final answer
    x = 247,055.19

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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.