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Finding the Fourth Proportional to 260,509.87, 390,764.81 and 73,521.37

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Solution

The fourth proportional to 260,509.87, 390,764.81 and 73,521.37 is: 110,282.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,509.87 : 390,764.81 = 73,521.37 : x
  2. Step 2: Convert to fraction form
    260,509.87/390,764.81 = 73,521.37/x
  3. Step 3: Cross multiply
    260,509.87x = 390,764.81 × 73,521.37
  4. Step 4: Simplify right side
    260,509.87x = 28,729,564,437.69
  5. Step 5: Solve for x
    x = 28,729,564,437.69/260,509.87
  6. Step 6: Final answer
    x = 110,282.06

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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.