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Finding the Fourth Proportional to 300,688.63, 414,939.46 and 171,633.76

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Solution

The fourth proportional to 300,688.63, 414,939.46 and 171,633.76 is: 236,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,688.63 : 414,939.46 = 171,633.76 : x
  2. Step 2: Convert to fraction form
    300,688.63/414,939.46 = 171,633.76/x
  3. Step 3: Cross multiply
    300,688.63x = 414,939.46 × 171,633.76
  4. Step 4: Simplify right side
    300,688.63x = 71,217,619,692.17
  5. Step 5: Solve for x
    x = 71,217,619,692.17/300,688.63
  6. Step 6: Final answer
    x = 236,848.40

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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.