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Finding the Fourth Proportional to 492,289.73, 678,432.38 and 356,092.71

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Solution

The fourth proportional to 492,289.73, 678,432.38 and 356,092.71 is: 490,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,289.73 : 678,432.38 = 356,092.71 : x
  2. Step 2: Convert to fraction form
    492,289.73/678,432.38 = 356,092.71/x
  3. Step 3: Cross multiply
    492,289.73x = 678,432.38 × 356,092.71
  4. Step 4: Simplify right side
    492,289.73x = 241,584,823,425.90
  5. Step 5: Solve for x
    x = 241,584,823,425.90/492,289.73
  6. Step 6: Final answer
    x = 490,737.08

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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.