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Finding the Fourth Proportional to 354,483.28, 489,233.94 and 225,433.94

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Solution

The fourth proportional to 354,483.28, 489,233.94 and 225,433.94 is: 311,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,483.28 : 489,233.94 = 225,433.94 : x
  2. Step 2: Convert to fraction form
    354,483.28/489,233.94 = 225,433.94/x
  3. Step 3: Cross multiply
    354,483.28x = 489,233.94 × 225,433.94
  4. Step 4: Simplify right side
    354,483.28x = 110,289,934,675.92
  5. Step 5: Solve for x
    x = 110,289,934,675.92/354,483.28
  6. Step 6: Final answer
    x = 311,128.74

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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.