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Finding the Fourth Proportional to 260,079.70, 390,119.55 and 73,091.20

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Solution

The fourth proportional to 260,079.70, 390,119.55 and 73,091.20 is: 109,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,079.70 : 390,119.55 = 73,091.20 : x
  2. Step 2: Convert to fraction form
    260,079.70/390,119.55 = 73,091.20/x
  3. Step 3: Cross multiply
    260,079.70x = 390,119.55 × 73,091.20
  4. Step 4: Simplify right side
    260,079.70x = 28,514,305,077.66
  5. Step 5: Solve for x
    x = 28,514,305,077.66/260,079.70
  6. Step 6: Final answer
    x = 109,636.80

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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.