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Finding the Fourth Proportional to 262,045.86, 393,076.46 and 72,507.76

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Solution

The fourth proportional to 262,045.86, 393,076.46 and 72,507.76 is: 108,763.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,045.86 : 393,076.46 = 72,507.76 : x
  2. Step 2: Convert to fraction form
    262,045.86/393,076.46 = 72,507.76/x
  3. Step 3: Cross multiply
    262,045.86x = 393,076.46 × 72,507.76
  4. Step 4: Simplify right side
    262,045.86x = 28,501,093,623.33
  5. Step 5: Solve for x
    x = 28,501,093,623.33/262,045.86
  6. Step 6: Final answer
    x = 108,763.76

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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.