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Finding the Fourth Proportional to 260,615.72, 359,619.36 and 145,900.64

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Solution

The fourth proportional to 260,615.72, 359,619.36 and 145,900.64 is: 201,325.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,615.72 : 359,619.36 = 145,900.64 : x
  2. Step 2: Convert to fraction form
    260,615.72/359,619.36 = 145,900.64/x
  3. Step 3: Cross multiply
    260,615.72x = 359,619.36 × 145,900.64
  4. Step 4: Simplify right side
    260,615.72x = 52,468,695,132.31
  5. Step 5: Solve for x
    x = 52,468,695,132.31/260,615.72
  6. Step 6: Final answer
    x = 201,325.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.