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Finding the Fourth Proportional to 259,626.60, 389,148.30 and 109,841.40

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Solution

The fourth proportional to 259,626.60, 389,148.30 and 109,841.40 is: 164,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,626.60 : 389,148.30 = 109,841.40 : x
  2. Step 2: Convert to fraction form
    259,626.60/389,148.30 = 109,841.40/x
  3. Step 3: Cross multiply
    259,626.60x = 389,148.30 × 109,841.40
  4. Step 4: Simplify right side
    259,626.60x = 42,744,594,079.62
  5. Step 5: Solve for x
    x = 42,744,594,079.62/259,626.60
  6. Step 6: Final answer
    x = 164,638.73

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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.