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Finding the Fourth Proportional to 328,287, 453,070.94 and 192,435.13

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Solution

The fourth proportional to 328,287, 453,070.94 and 192,435.13 is: 265,580.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,287 : 453,070.94 = 192,435.13 : x
  2. Step 2: Convert to fraction form
    328,287/453,070.94 = 192,435.13/x
  3. Step 3: Cross multiply
    328,287x = 453,070.94 × 192,435.13
  4. Step 4: Simplify right side
    328,287x = 87,186,764,105.44
  5. Step 5: Solve for x
    x = 87,186,764,105.44/328,287
  6. Step 6: Final answer
    x = 265,580.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.