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Finding the Fourth Proportional to 336,962, 505,472.16 and 87,644

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Solution

The fourth proportional to 336,962, 505,472.16 and 87,644 is: 131,473.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,962 : 505,472.16 = 87,644 : x
  2. Step 2: Convert to fraction form
    336,962/505,472.16 = 87,644/x
  3. Step 3: Cross multiply
    336,962x = 505,472.16 × 87,644
  4. Step 4: Simplify right side
    336,962x = 44,301,601,991.04
  5. Step 5: Solve for x
    x = 44,301,601,991.04/336,962
  6. Step 6: Final answer
    x = 131,473.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.