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Finding the Fourth Proportional to 253,134.30, 379,701.45 and 208,811.10

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Solution

The fourth proportional to 253,134.30, 379,701.45 and 208,811.10 is: 313,216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,134.30 : 379,701.45 = 208,811.10 : x
  2. Step 2: Convert to fraction form
    253,134.30/379,701.45 = 208,811.10/x
  3. Step 3: Cross multiply
    253,134.30x = 379,701.45 × 208,811.10
  4. Step 4: Simplify right side
    253,134.30x = 79,285,877,446.10
  5. Step 5: Solve for x
    x = 79,285,877,446.10/253,134.30
  6. Step 6: Final answer
    x = 313,216.65

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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.