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Finding the Fourth Proportional to 492,117.31, 679,121.90 and 265,762.81

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Solution

The fourth proportional to 492,117.31, 679,121.90 and 265,762.81 is: 366,752.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,117.31 : 679,121.90 = 265,762.81 : x
  2. Step 2: Convert to fraction form
    492,117.31/679,121.90 = 265,762.81/x
  3. Step 3: Cross multiply
    492,117.31x = 679,121.90 × 265,762.81
  4. Step 4: Simplify right side
    492,117.31x = 180,485,344,993.24
  5. Step 5: Solve for x
    x = 180,485,344,993.24/492,117.31
  6. Step 6: Final answer
    x = 366,752.68

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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.