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Finding the Fourth Proportional to 253,162.70, 379,411.86 and 186,289.70

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Solution

The fourth proportional to 253,162.70, 379,411.86 and 186,289.70 is: 279,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,162.70 : 379,411.86 = 186,289.70 : x
  2. Step 2: Convert to fraction form
    253,162.70/379,411.86 = 186,289.70/x
  3. Step 3: Cross multiply
    253,162.70x = 379,411.86 × 186,289.70
  4. Step 4: Simplify right side
    253,162.70x = 70,680,521,575.84
  5. Step 5: Solve for x
    x = 70,680,521,575.84/253,162.70
  6. Step 6: Final answer
    x = 279,190.11

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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.