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Finding the Fourth Proportional to 324,394.50, 486,835.29 and 122,190.11

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Solution

The fourth proportional to 324,394.50, 486,835.29 and 122,190.11 is: 183,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,394.50 : 486,835.29 = 122,190.11 : x
  2. Step 2: Convert to fraction form
    324,394.50/486,835.29 = 122,190.11/x
  3. Step 3: Cross multiply
    324,394.50x = 486,835.29 × 122,190.11
  4. Step 4: Simplify right side
    324,394.50x = 59,486,455,202.81
  5. Step 5: Solve for x
    x = 59,486,455,202.81/324,394.50
  6. Step 6: Final answer
    x = 183,376.89

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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.