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Finding the Fourth Proportional to 253,406.63, 379,806.59 and 118,288.91

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Solution

The fourth proportional to 253,406.63, 379,806.59 and 118,288.91 is: 177,291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,406.63 : 379,806.59 = 118,288.91 : x
  2. Step 2: Convert to fraction form
    253,406.63/379,806.59 = 118,288.91/x
  3. Step 3: Cross multiply
    253,406.63x = 379,806.59 × 118,288.91
  4. Step 4: Simplify right side
    253,406.63x = 44,926,907,541.92
  5. Step 5: Solve for x
    x = 44,926,907,541.92/253,406.63
  6. Step 6: Final answer
    x = 177,291.76

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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.