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Finding the Fourth Proportional to 501,290.21, 691,785.81 and 271,847.94

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Solution

The fourth proportional to 501,290.21, 691,785.81 and 271,847.94 is: 375,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,290.21 : 691,785.81 = 271,847.94 : x
  2. Step 2: Convert to fraction form
    501,290.21/691,785.81 = 271,847.94/x
  3. Step 3: Cross multiply
    501,290.21x = 691,785.81 × 271,847.94
  4. Step 4: Simplify right side
    501,290.21x = 188,060,547,369.73
  5. Step 5: Solve for x
    x = 188,060,547,369.73/501,290.21
  6. Step 6: Final answer
    x = 375,153.05

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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.