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Finding the Fourth Proportional to 260,080.70, 390,121.05 and 73,092.20

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Solution

The fourth proportional to 260,080.70, 390,121.05 and 73,092.20 is: 109,638.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,080.70 : 390,121.05 = 73,092.20 : x
  2. Step 2: Convert to fraction form
    260,080.70/390,121.05 = 73,092.20/x
  3. Step 3: Cross multiply
    260,080.70x = 390,121.05 × 73,092.20
  4. Step 4: Simplify right side
    260,080.70x = 28,514,805,810.81
  5. Step 5: Solve for x
    x = 28,514,805,810.81/260,080.70
  6. Step 6: Final answer
    x = 109,638.30

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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.