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Finding the Fourth Proportional to 551,267.82, 760,696.65 and 309,494.97

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Solution

The fourth proportional to 551,267.82, 760,696.65 and 309,494.97 is: 427,073.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,267.82 : 760,696.65 = 309,494.97 : x
  2. Step 2: Convert to fraction form
    551,267.82/760,696.65 = 309,494.97/x
  3. Step 3: Cross multiply
    551,267.82x = 760,696.65 × 309,494.97
  4. Step 4: Simplify right side
    551,267.82x = 235,431,786,870.85
  5. Step 5: Solve for x
    x = 235,431,786,870.85/551,267.82
  6. Step 6: Final answer
    x = 427,073.34

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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.