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Finding the Fourth Proportional to 251,800.65, 347,492.45 and 137,086.79

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Solution

The fourth proportional to 251,800.65, 347,492.45 and 137,086.79 is: 189,183.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,800.65 : 347,492.45 = 137,086.79 : x
  2. Step 2: Convert to fraction form
    251,800.65/347,492.45 = 137,086.79/x
  3. Step 3: Cross multiply
    251,800.65x = 347,492.45 × 137,086.79
  4. Step 4: Simplify right side
    251,800.65x = 47,636,623,124.99
  5. Step 5: Solve for x
    x = 47,636,623,124.99/251,800.65
  6. Step 6: Final answer
    x = 189,183.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.