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Finding the Fourth Proportional to 358,311.70, 494,472.50 and 197,162.61

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Solution

The fourth proportional to 358,311.70, 494,472.50 and 197,162.61 is: 272,085.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,311.70 : 494,472.50 = 197,162.61 : x
  2. Step 2: Convert to fraction form
    358,311.70/494,472.50 = 197,162.61/x
  3. Step 3: Cross multiply
    358,311.70x = 494,472.50 × 197,162.61
  4. Step 4: Simplify right side
    358,311.70x = 97,491,486,572.50
  5. Step 5: Solve for x
    x = 97,491,486,572.50/358,311.70
  6. Step 6: Final answer
    x = 272,085.69

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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.