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Finding the Fourth Proportional to 165,080.80, 247,621.20 and 40,421.80

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Solution

The fourth proportional to 165,080.80, 247,621.20 and 40,421.80 is: 60,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,080.80 : 247,621.20 = 40,421.80 : x
  2. Step 2: Convert to fraction form
    165,080.80/247,621.20 = 40,421.80/x
  3. Step 3: Cross multiply
    165,080.80x = 247,621.20 × 40,421.80
  4. Step 4: Simplify right side
    165,080.80x = 10,009,294,622.16
  5. Step 5: Solve for x
    x = 10,009,294,622.16/165,080.80
  6. Step 6: Final answer
    x = 60,632.70

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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.