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Finding the Fourth Proportional to 287,392.34, 396,601.16 and 166,603.56

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Solution

The fourth proportional to 287,392.34, 396,601.16 and 166,603.56 is: 229,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,392.34 : 396,601.16 = 166,603.56 : x
  2. Step 2: Convert to fraction form
    287,392.34/396,601.16 = 166,603.56/x
  3. Step 3: Cross multiply
    287,392.34x = 396,601.16 × 166,603.56
  4. Step 4: Simplify right side
    287,392.34x = 66,075,165,156.13
  5. Step 5: Solve for x
    x = 66,075,165,156.13/287,392.34
  6. Step 6: Final answer
    x = 229,912.76

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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.