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Finding the Fourth Proportional to 421,814.49, 632,869.37 and 122,313.03

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Solution

The fourth proportional to 421,814.49, 632,869.37 and 122,313.03 is: 183,512.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,814.49 : 632,869.37 = 122,313.03 : x
  2. Step 2: Convert to fraction form
    421,814.49/632,869.37 = 122,313.03/x
  3. Step 3: Cross multiply
    421,814.49x = 632,869.37 × 122,313.03
  4. Step 4: Simplify right side
    421,814.49x = 77,408,169,627.33
  5. Step 5: Solve for x
    x = 77,408,169,627.33/421,814.49
  6. Step 6: Final answer
    x = 183,512.35

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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.