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Finding the Fourth Proportional to 262,723, 362,566.40 and 143,491

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Solution

The fourth proportional to 262,723, 362,566.40 and 143,491 is: 198,022.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,723 : 362,566.40 = 143,491 : x
  2. Step 2: Convert to fraction form
    262,723/362,566.40 = 143,491/x
  3. Step 3: Cross multiply
    262,723x = 362,566.40 × 143,491
  4. Step 4: Simplify right side
    262,723x = 52,025,015,302.40
  5. Step 5: Solve for x
    x = 52,025,015,302.40/262,723
  6. Step 6: Final answer
    x = 198,022.31

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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.