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Finding the Fourth Proportional to 510,453.34, 765,674.78 and 131,372.58

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Solution

The fourth proportional to 510,453.34, 765,674.78 and 131,372.58 is: 197,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,453.34 : 765,674.78 = 131,372.58 : x
  2. Step 2: Convert to fraction form
    510,453.34/765,674.78 = 131,372.58/x
  3. Step 3: Cross multiply
    510,453.34x = 765,674.78 × 131,372.58
  4. Step 4: Simplify right side
    510,453.34x = 100,588,671,289.53
  5. Step 5: Solve for x
    x = 100,588,671,289.53/510,453.34
  6. Step 6: Final answer
    x = 197,057.52

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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.