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Finding the Fourth Proportional to 260,489.84, 390,766.40 and 73,501.36

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Solution

The fourth proportional to 260,489.84, 390,766.40 and 73,501.36 is: 110,260.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,489.84 : 390,766.40 = 73,501.36 : x
  2. Step 2: Convert to fraction form
    260,489.84/390,766.40 = 73,501.36/x
  3. Step 3: Cross multiply
    260,489.84x = 390,766.40 × 73,501.36
  4. Step 4: Simplify right side
    260,489.84x = 28,721,861,842.30
  5. Step 5: Solve for x
    x = 28,721,861,842.30/260,489.84
  6. Step 6: Final answer
    x = 110,260.97

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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.