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Finding the Fourth Proportional to 328,302.62, 492,458.85 and 91,646.54

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Solution

The fourth proportional to 328,302.62, 492,458.85 and 91,646.54 is: 137,471.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,302.62 : 492,458.85 = 91,646.54 : x
  2. Step 2: Convert to fraction form
    328,302.62/492,458.85 = 91,646.54/x
  3. Step 3: Cross multiply
    328,302.62x = 492,458.85 × 91,646.54
  4. Step 4: Simplify right side
    328,302.62x = 45,132,147,232.58
  5. Step 5: Solve for x
    x = 45,132,147,232.58/328,302.62
  6. Step 6: Final answer
    x = 137,471.18

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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.