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Finding the Fourth Proportional to 421,928.08, 632,793.66 and 122,328.24

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Solution

The fourth proportional to 421,928.08, 632,793.66 and 122,328.24 is: 183,463.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,928.08 : 632,793.66 = 122,328.24 : x
  2. Step 2: Convert to fraction form
    421,928.08/632,793.66 = 122,328.24/x
  3. Step 3: Cross multiply
    421,928.08x = 632,793.66 × 122,328.24
  4. Step 4: Simplify right side
    421,928.08x = 77,408,534,710.96
  5. Step 5: Solve for x
    x = 77,408,534,710.96/421,928.08
  6. Step 6: Final answer
    x = 183,463.81

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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.