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Finding the Fourth Proportional to 326,765.40, 490,178.31 and 127,100.94

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Solution

The fourth proportional to 326,765.40, 490,178.31 and 127,100.94 is: 190,663.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,765.40 : 490,178.31 = 127,100.94 : x
  2. Step 2: Convert to fraction form
    326,765.40/490,178.31 = 127,100.94/x
  3. Step 3: Cross multiply
    326,765.40x = 490,178.31 × 127,100.94
  4. Step 4: Simplify right side
    326,765.40x = 62,302,123,968.61
  5. Step 5: Solve for x
    x = 62,302,123,968.61/326,765.40
  6. Step 6: Final answer
    x = 190,663.16

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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.