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Finding the Fourth Proportional to 328,596.48, 492,819.36 and 91,955.76

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Solution

The fourth proportional to 328,596.48, 492,819.36 and 91,955.76 is: 137,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,596.48 : 492,819.36 = 91,955.76 : x
  2. Step 2: Convert to fraction form
    328,596.48/492,819.36 = 91,955.76/x
  3. Step 3: Cross multiply
    328,596.48x = 492,819.36 × 91,955.76
  4. Step 4: Simplify right side
    328,596.48x = 45,317,578,791.51
  5. Step 5: Solve for x
    x = 45,317,578,791.51/328,596.48
  6. Step 6: Final answer
    x = 137,912.55

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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.