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Finding the Fourth Proportional to 279,436.66, 384,768.64 and 210,626.10

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Solution

The fourth proportional to 279,436.66, 384,768.64 and 210,626.10 is: 290,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,436.66 : 384,768.64 = 210,626.10 : x
  2. Step 2: Convert to fraction form
    279,436.66/384,768.64 = 210,626.10/x
  3. Step 3: Cross multiply
    279,436.66x = 384,768.64 × 210,626.10
  4. Step 4: Simplify right side
    279,436.66x = 81,042,318,045.50
  5. Step 5: Solve for x
    x = 81,042,318,045.50/279,436.66
  6. Step 6: Final answer
    x = 290,020.35

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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.