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Finding the Fourth Proportional to 501,235.25, 691,553.51 and 307,443.81

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Solution

The fourth proportional to 501,235.25, 691,553.51 and 307,443.81 is: 424,179.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,235.25 : 691,553.51 = 307,443.81 : x
  2. Step 2: Convert to fraction form
    501,235.25/691,553.51 = 307,443.81/x
  3. Step 3: Cross multiply
    501,235.25x = 691,553.51 × 307,443.81
  4. Step 4: Simplify right side
    501,235.25x = 212,613,844,396.05
  5. Step 5: Solve for x
    x = 212,613,844,396.05/501,235.25
  6. Step 6: Final answer
    x = 424,179.76

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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.