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Finding the Fourth Proportional to 165,175.20, 231,400.80 and 165,175.20

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Solution

The fourth proportional to 165,175.20, 231,400.80 and 165,175.20 is: 231,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,175.20 : 231,400.80 = 165,175.20 : x
  2. Step 2: Convert to fraction form
    165,175.20/231,400.80 = 165,175.20/x
  3. Step 3: Cross multiply
    165,175.20x = 231,400.80 × 165,175.20
  4. Step 4: Simplify right side
    165,175.20x = 38,221,673,420.16
  5. Step 5: Solve for x
    x = 38,221,673,420.16/165,175.20
  6. Step 6: Final answer
    x = 231,400.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.