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Finding the Fourth Proportional to 165,465.60, 247,615.20 and 115,310.40

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Solution

The fourth proportional to 165,465.60, 247,615.20 and 115,310.40 is: 172,559.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,465.60 : 247,615.20 = 115,310.40 : x
  2. Step 2: Convert to fraction form
    165,465.60/247,615.20 = 115,310.40/x
  3. Step 3: Cross multiply
    165,465.60x = 247,615.20 × 115,310.40
  4. Step 4: Simplify right side
    165,465.60x = 28,552,607,758.08
  5. Step 5: Solve for x
    x = 28,552,607,758.08/165,465.60
  6. Step 6: Final answer
    x = 172,559.18

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1.5x scale

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.