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Finding the Fourth Proportional to 215,896.16, 297,879.03 and 207,383.28

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Solution

The fourth proportional to 215,896.16, 297,879.03 and 207,383.28 is: 286,133.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,896.16 : 297,879.03 = 207,383.28 : x
  2. Step 2: Convert to fraction form
    215,896.16/297,879.03 = 207,383.28/x
  3. Step 3: Cross multiply
    215,896.16x = 297,879.03 × 207,383.28
  4. Step 4: Simplify right side
    215,896.16x = 61,775,130,284.62
  5. Step 5: Solve for x
    x = 61,775,130,284.62/215,896.16
  6. Step 6: Final answer
    x = 286,133.54

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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.