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Finding the Fourth Proportional to 260,613.48, 390,526.56 and 193,739.88

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Solution

The fourth proportional to 260,613.48, 390,526.56 and 193,739.88 is: 290,317.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,613.48 : 390,526.56 = 193,739.88 : x
  2. Step 2: Convert to fraction form
    260,613.48/390,526.56 = 193,739.88/x
  3. Step 3: Cross multiply
    260,613.48x = 390,526.56 × 193,739.88
  4. Step 4: Simplify right side
    260,613.48x = 75,660,568,871.21
  5. Step 5: Solve for x
    x = 75,660,568,871.21/260,613.48
  6. Step 6: Final answer
    x = 290,317.17

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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.