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Finding the Fourth Proportional to 262,728, 362,573.28 and 143,496

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Solution

The fourth proportional to 262,728, 362,573.28 and 143,496 is: 198,029.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,728 : 362,573.28 = 143,496 : x
  2. Step 2: Convert to fraction form
    262,728/362,573.28 = 143,496/x
  3. Step 3: Cross multiply
    262,728x = 362,573.28 × 143,496
  4. Step 4: Simplify right side
    262,728x = 52,027,815,386.88
  5. Step 5: Solve for x
    x = 52,027,815,386.88/262,728
  6. Step 6: Final answer
    x = 198,029.20

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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.