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Finding the Fourth Proportional to 260,389.44, 390,584.16 and 247,092.48

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Solution

The fourth proportional to 260,389.44, 390,584.16 and 247,092.48 is: 370,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,389.44 : 390,584.16 = 247,092.48 : x
  2. Step 2: Convert to fraction form
    260,389.44/390,584.16 = 247,092.48/x
  3. Step 3: Cross multiply
    260,389.44x = 390,584.16 × 247,092.48
  4. Step 4: Simplify right side
    260,389.44x = 96,510,408,743.12
  5. Step 5: Solve for x
    x = 96,510,408,743.12/260,389.44
  6. Step 6: Final answer
    x = 370,638.72

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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.