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Finding the Fourth Proportional to 260,065.08, 390,112.20 and 73,062

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Solution

The fourth proportional to 260,065.08, 390,112.20 and 73,062 is: 109,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,065.08 : 390,112.20 = 73,062 : x
  2. Step 2: Convert to fraction form
    260,065.08/390,112.20 = 73,062/x
  3. Step 3: Cross multiply
    260,065.08x = 390,112.20 × 73,062
  4. Step 4: Simplify right side
    260,065.08x = 28,502,377,556.40
  5. Step 5: Solve for x
    x = 28,502,377,556.40/260,065.08
  6. Step 6: Final answer
    x = 109,597.10

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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.