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Finding the Fourth Proportional to 165,207.60, 247,811.40 and 154,053.90

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Solution

The fourth proportional to 165,207.60, 247,811.40 and 154,053.90 is: 231,080.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,207.60 : 247,811.40 = 154,053.90 : x
  2. Step 2: Convert to fraction form
    165,207.60/247,811.40 = 154,053.90/x
  3. Step 3: Cross multiply
    165,207.60x = 247,811.40 × 154,053.90
  4. Step 4: Simplify right side
    165,207.60x = 38,176,312,634.46
  5. Step 5: Solve for x
    x = 38,176,312,634.46/165,207.60
  6. Step 6: Final answer
    x = 231,080.85

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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.