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Finding the Fourth Proportional to 260,104.37, 390,156.54 and 73,115.87

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Solution

The fourth proportional to 260,104.37, 390,156.54 and 73,115.87 is: 109,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,104.37 : 390,156.54 = 73,115.87 : x
  2. Step 2: Convert to fraction form
    260,104.37/390,156.54 = 73,115.87/x
  3. Step 3: Cross multiply
    260,104.37x = 390,156.54 × 73,115.87
  4. Step 4: Simplify right side
    260,104.37x = 28,526,632,907.51
  5. Step 5: Solve for x
    x = 28,526,632,907.51/260,104.37
  6. Step 6: Final answer
    x = 109,673.80

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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.