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Finding the Fourth Proportional to 326,774.40, 490,191.81 and 127,109.94

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Solution

The fourth proportional to 326,774.40, 490,191.81 and 127,109.94 is: 190,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,774.40 : 490,191.81 = 127,109.94 : x
  2. Step 2: Convert to fraction form
    326,774.40/490,191.81 = 127,109.94/x
  3. Step 3: Cross multiply
    326,774.40x = 490,191.81 × 127,109.94
  4. Step 4: Simplify right side
    326,774.40x = 62,308,251,557.59
  5. Step 5: Solve for x
    x = 62,308,251,557.59/326,774.40
  6. Step 6: Final answer
    x = 190,676.66

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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.