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Finding the Fourth Proportional to 260,527.71, 390,791.55 and 73,539.21

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Solution

The fourth proportional to 260,527.71, 390,791.55 and 73,539.21 is: 110,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,527.71 : 390,791.55 = 73,539.21 : x
  2. Step 2: Convert to fraction form
    260,527.71/390,791.55 = 73,539.21/x
  3. Step 3: Cross multiply
    260,527.71x = 390,791.55 × 73,539.21
  4. Step 4: Simplify right side
    260,527.71x = 28,738,501,861.68
  5. Step 5: Solve for x
    x = 28,738,501,861.68/260,527.71
  6. Step 6: Final answer
    x = 110,308.81

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1.5x scale

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.