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Finding the Fourth Proportional to 260,395.62, 390,525.08 and 110,558.78

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Solution

The fourth proportional to 260,395.62, 390,525.08 and 110,558.78 is: 165,809.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,395.62 : 390,525.08 = 110,558.78 : x
  2. Step 2: Convert to fraction form
    260,395.62/390,525.08 = 110,558.78/x
  3. Step 3: Cross multiply
    260,395.62x = 390,525.08 × 110,558.78
  4. Step 4: Simplify right side
    260,395.62x = 43,175,976,404.20
  5. Step 5: Solve for x
    x = 43,175,976,404.20/260,395.62
  6. Step 6: Final answer
    x = 165,809.15

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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.