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Finding the Fourth Proportional to 421,970.60, 632,518.49 and 263,835.92

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Solution

The fourth proportional to 421,970.60, 632,518.49 and 263,835.92 is: 395,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,970.60 : 632,518.49 = 263,835.92 : x
  2. Step 2: Convert to fraction form
    421,970.60/632,518.49 = 263,835.92/x
  3. Step 3: Cross multiply
    421,970.60x = 632,518.49 × 263,835.92
  4. Step 4: Simplify right side
    421,970.60x = 166,881,093,244.39
  5. Step 5: Solve for x
    x = 166,881,093,244.39/421,970.60
  6. Step 6: Final answer
    x = 395,480.38

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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.