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Finding the Fourth Proportional to 165,080.40, 247,620.60 and 155,238.90

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Solution

The fourth proportional to 165,080.40, 247,620.60 and 155,238.90 is: 232,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,080.40 : 247,620.60 = 155,238.90 : x
  2. Step 2: Convert to fraction form
    165,080.40/247,620.60 = 155,238.90/x
  3. Step 3: Cross multiply
    165,080.40x = 247,620.60 × 155,238.90
  4. Step 4: Simplify right side
    165,080.40x = 38,440,349,561.34
  5. Step 5: Solve for x
    x = 38,440,349,561.34/165,080.40
  6. Step 6: Final answer
    x = 232,858.35

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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.