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Finding the Fourth Proportional to 260,284.80, 390,500.64 and 73,297.92

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Solution

The fourth proportional to 260,284.80, 390,500.64 and 73,297.92 is: 109,967.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,284.80 : 390,500.64 = 73,297.92 : x
  2. Step 2: Convert to fraction form
    260,284.80/390,500.64 = 73,297.92/x
  3. Step 3: Cross multiply
    260,284.80x = 390,500.64 × 73,297.92
  4. Step 4: Simplify right side
    260,284.80x = 28,622,884,670.67
  5. Step 5: Solve for x
    x = 28,622,884,670.67/260,284.80
  6. Step 6: Final answer
    x = 109,967.56

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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.