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Finding the Fourth Proportional to 455,251.79, 628,243.81 and 251,302.42

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Solution

The fourth proportional to 455,251.79, 628,243.81 and 251,302.42 is: 346,795.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,251.79 : 628,243.81 = 251,302.42 : x
  2. Step 2: Convert to fraction form
    455,251.79/628,243.81 = 251,302.42/x
  3. Step 3: Cross multiply
    455,251.79x = 628,243.81 × 251,302.42
  4. Step 4: Simplify right side
    455,251.79x = 157,879,187,839.77
  5. Step 5: Solve for x
    x = 157,879,187,839.77/455,251.79
  6. Step 6: Final answer
    x = 346,795.31

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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.