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Finding the Fourth Proportional to 312,668.70, 468,657.45 and 172,527.90

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Solution

The fourth proportional to 312,668.70, 468,657.45 and 172,527.90 is: 258,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,668.70 : 468,657.45 = 172,527.90 : x
  2. Step 2: Convert to fraction form
    312,668.70/468,657.45 = 172,527.90/x
  3. Step 3: Cross multiply
    312,668.70x = 468,657.45 × 172,527.90
  4. Step 4: Simplify right side
    312,668.70x = 80,856,485,667.86
  5. Step 5: Solve for x
    x = 80,856,485,667.86/312,668.70
  6. Step 6: Final answer
    x = 258,601.15

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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.