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Finding the Fourth Proportional to 260,528.71, 390,793.05 and 73,540.21

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Solution

The fourth proportional to 260,528.71, 390,793.05 and 73,540.21 is: 110,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,528.71 : 390,793.05 = 73,540.21 : x
  2. Step 2: Convert to fraction form
    260,528.71/390,793.05 = 73,540.21/x
  3. Step 3: Cross multiply
    260,528.71x = 390,793.05 × 73,540.21
  4. Step 4: Simplify right side
    260,528.71x = 28,739,002,963.54
  5. Step 5: Solve for x
    x = 28,739,002,963.54/260,528.71
  6. Step 6: Final answer
    x = 110,310.31

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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.