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Finding the Fourth Proportional to 389,399.33, 537,614.36 and 298,580.84

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Solution

The fourth proportional to 389,399.33, 537,614.36 and 298,580.84 is: 412,228.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,399.33 : 537,614.36 = 298,580.84 : x
  2. Step 2: Convert to fraction form
    389,399.33/537,614.36 = 298,580.84/x
  3. Step 3: Cross multiply
    389,399.33x = 537,614.36 × 298,580.84
  4. Step 4: Simplify right side
    389,399.33x = 160,521,345,711.96
  5. Step 5: Solve for x
    x = 160,521,345,711.96/389,399.33
  6. Step 6: Final answer
    x = 412,228.10

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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.