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Finding the Fourth Proportional to 551,267.57, 760,696.30 and 309,494.72

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Solution

The fourth proportional to 551,267.57, 760,696.30 and 309,494.72 is: 427,072.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,267.57 : 760,696.30 = 309,494.72 : x
  2. Step 2: Convert to fraction form
    551,267.57/760,696.30 = 309,494.72/x
  3. Step 3: Cross multiply
    551,267.57x = 760,696.30 × 309,494.72
  4. Step 4: Simplify right side
    551,267.57x = 235,431,489,501.54
  5. Step 5: Solve for x
    x = 235,431,489,501.54/551,267.57
  6. Step 6: Final answer
    x = 427,072.99

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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.