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Finding the Fourth Proportional to 328,445.79, 491,709.09 and 296,928.69

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Solution

The fourth proportional to 328,445.79, 491,709.09 and 296,928.69 is: 444,525.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,445.79 : 491,709.09 = 296,928.69 : x
  2. Step 2: Convert to fraction form
    328,445.79/491,709.09 = 296,928.69/x
  3. Step 3: Cross multiply
    328,445.79x = 491,709.09 × 296,928.69
  4. Step 4: Simplify right side
    328,445.79x = 146,002,535,954.79
  5. Step 5: Solve for x
    x = 146,002,535,954.79/328,445.79
  6. Step 6: Final answer
    x = 444,525.52

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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.