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Finding the Fourth Proportional to 383,845.50, 529,706.79 and 214,079.76

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Solution

The fourth proportional to 383,845.50, 529,706.79 and 214,079.76 is: 295,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,845.50 : 529,706.79 = 214,079.76 : x
  2. Step 2: Convert to fraction form
    383,845.50/529,706.79 = 214,079.76/x
  3. Step 3: Cross multiply
    383,845.50x = 529,706.79 × 214,079.76
  4. Step 4: Simplify right side
    383,845.50x = 113,399,502,473.57
  5. Step 5: Solve for x
    x = 113,399,502,473.57/383,845.50
  6. Step 6: Final answer
    x = 295,430.07

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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.