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Finding the Fourth Proportional to 258,574.56, 356,844.47 and 215,481.95

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Solution

The fourth proportional to 258,574.56, 356,844.47 and 215,481.95 is: 297,374.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,574.56 : 356,844.47 = 215,481.95 : x
  2. Step 2: Convert to fraction form
    258,574.56/356,844.47 = 215,481.95/x
  3. Step 3: Cross multiply
    258,574.56x = 356,844.47 × 215,481.95
  4. Step 4: Simplify right side
    258,574.56x = 76,893,543,938.19
  5. Step 5: Solve for x
    x = 76,893,543,938.19/258,574.56
  6. Step 6: Final answer
    x = 297,374.74

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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.