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Finding the Fourth Proportional to 262,611, 362,403.18 and 143,379

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Solution

The fourth proportional to 262,611, 362,403.18 and 143,379 is: 197,863.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,611 : 362,403.18 = 143,379 : x
  2. Step 2: Convert to fraction form
    262,611/362,403.18 = 143,379/x
  3. Step 3: Cross multiply
    262,611x = 362,403.18 × 143,379
  4. Step 4: Simplify right side
    262,611x = 51,961,005,545.22
  5. Step 5: Solve for x
    x = 51,961,005,545.22/262,611
  6. Step 6: Final answer
    x = 197,863.02

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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.