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Finding the Fourth Proportional to 492,792.20, 739,188.30 and 118,815.20

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Solution

The fourth proportional to 492,792.20, 739,188.30 and 118,815.20 is: 178,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,792.20 : 739,188.30 = 118,815.20 : x
  2. Step 2: Convert to fraction form
    492,792.20/739,188.30 = 118,815.20/x
  3. Step 3: Cross multiply
    492,792.20x = 739,188.30 × 118,815.20
  4. Step 4: Simplify right side
    492,792.20x = 87,826,805,702.16
  5. Step 5: Solve for x
    x = 87,826,805,702.16/492,792.20
  6. Step 6: Final answer
    x = 178,222.80

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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.