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Finding the Fourth Proportional to 312,234.75, 430,883.15 and 168,994.76

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Solution

The fourth proportional to 312,234.75, 430,883.15 and 168,994.76 is: 233,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,234.75 : 430,883.15 = 168,994.76 : x
  2. Step 2: Convert to fraction form
    312,234.75/430,883.15 = 168,994.76/x
  3. Step 3: Cross multiply
    312,234.75x = 430,883.15 × 168,994.76
  4. Step 4: Simplify right side
    312,234.75x = 72,816,991,522.90
  5. Step 5: Solve for x
    x = 72,816,991,522.90/312,234.75
  6. Step 6: Final answer
    x = 233,212.32

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1.5x scale

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.