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Finding the Fourth Proportional to 260,187.80, 390,355.14 and 73,200.92

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Solution

The fourth proportional to 260,187.80, 390,355.14 and 73,200.92 is: 109,822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,187.80 : 390,355.14 = 73,200.92 : x
  2. Step 2: Convert to fraction form
    260,187.80/390,355.14 = 73,200.92/x
  3. Step 3: Cross multiply
    260,187.80x = 390,355.14 × 73,200.92
  4. Step 4: Simplify right side
    260,187.80x = 28,574,355,374.73
  5. Step 5: Solve for x
    x = 28,574,355,374.73/260,187.80
  6. Step 6: Final answer
    x = 109,822.04

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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.