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Finding the Fourth Proportional to 438,195, 604,709.10 and 236,991

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Solution

The fourth proportional to 438,195, 604,709.10 and 236,991 is: 327,047.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,195 : 604,709.10 = 236,991 : x
  2. Step 2: Convert to fraction form
    438,195/604,709.10 = 236,991/x
  3. Step 3: Cross multiply
    438,195x = 604,709.10 × 236,991
  4. Step 4: Simplify right side
    438,195x = 143,310,614,318.10
  5. Step 5: Solve for x
    x = 143,310,614,318.10/438,195
  6. Step 6: Final answer
    x = 327,047.58

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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.