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Finding the Fourth Proportional to 339,267.80, 508,901.70 and 191,811.80

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Solution

The fourth proportional to 339,267.80, 508,901.70 and 191,811.80 is: 287,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,267.80 : 508,901.70 = 191,811.80 : x
  2. Step 2: Convert to fraction form
    339,267.80/508,901.70 = 191,811.80/x
  3. Step 3: Cross multiply
    339,267.80x = 508,901.70 × 191,811.80
  4. Step 4: Simplify right side
    339,267.80x = 97,613,351,100.06
  5. Step 5: Solve for x
    x = 97,613,351,100.06/339,267.80
  6. Step 6: Final answer
    x = 287,717.70

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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.