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Finding the Fourth Proportional to 492,779.49, 739,170.46 and 137,792.94

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Solution

The fourth proportional to 492,779.49, 739,170.46 and 137,792.94 is: 206,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,779.49 : 739,170.46 = 137,792.94 : x
  2. Step 2: Convert to fraction form
    492,779.49/739,170.46 = 137,792.94/x
  3. Step 3: Cross multiply
    492,779.49x = 739,170.46 × 137,792.94
  4. Step 4: Simplify right side
    492,779.49x = 101,852,470,844.55
  5. Step 5: Solve for x
    x = 101,852,470,844.55/492,779.49
  6. Step 6: Final answer
    x = 206,689.75

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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.