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Finding the Fourth Proportional to 330,690.80, 456,361.29 and 201,635.93

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Solution

The fourth proportional to 330,690.80, 456,361.29 and 201,635.93 is: 278,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,690.80 : 456,361.29 = 201,635.93 : x
  2. Step 2: Convert to fraction form
    330,690.80/456,361.29 = 201,635.93/x
  3. Step 3: Cross multiply
    330,690.80x = 456,361.29 × 201,635.93
  4. Step 4: Simplify right side
    330,690.80x = 92,018,834,266.05
  5. Step 5: Solve for x
    x = 92,018,834,266.05/330,690.80
  6. Step 6: Final answer
    x = 278,262.45

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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.