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Finding the Fourth Proportional to 371,576.83, 512,776.16 and 210,431.92

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Solution

The fourth proportional to 371,576.83, 512,776.16 and 210,431.92 is: 290,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,576.83 : 512,776.16 = 210,431.92 : x
  2. Step 2: Convert to fraction form
    371,576.83/512,776.16 = 210,431.92/x
  3. Step 3: Cross multiply
    371,576.83x = 512,776.16 × 210,431.92
  4. Step 4: Simplify right side
    371,576.83x = 107,904,471,879.03
  5. Step 5: Solve for x
    x = 107,904,471,879.03/371,576.83
  6. Step 6: Final answer
    x = 290,396.13

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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.