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Finding the Fourth Proportional to 262,047.86, 393,079.46 and 72,509.76

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Solution

The fourth proportional to 262,047.86, 393,079.46 and 72,509.76 is: 108,766.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,047.86 : 393,079.46 = 72,509.76 : x
  2. Step 2: Convert to fraction form
    262,047.86/393,079.46 = 72,509.76/x
  3. Step 3: Cross multiply
    262,047.86x = 393,079.46 × 72,509.76
  4. Step 4: Simplify right side
    262,047.86x = 28,502,097,305.53
  5. Step 5: Solve for x
    x = 28,502,097,305.53/262,047.86
  6. Step 6: Final answer
    x = 108,766.76

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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.