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Finding the Fourth Proportional to 492,199.50, 679,235.78 and 265,845

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Solution

The fourth proportional to 492,199.50, 679,235.78 and 265,845 is: 366,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,199.50 : 679,235.78 = 265,845 : x
  2. Step 2: Convert to fraction form
    492,199.50/679,235.78 = 265,845/x
  3. Step 3: Cross multiply
    492,199.50x = 679,235.78 × 265,845
  4. Step 4: Simplify right side
    492,199.50x = 180,571,435,934.10
  5. Step 5: Solve for x
    x = 180,571,435,934.10/492,199.50
  6. Step 6: Final answer
    x = 366,866.35

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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.