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Finding the Fourth Proportional to 421,844.34, 632,636.15 and 122,346.95

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Solution

The fourth proportional to 421,844.34, 632,636.15 and 122,346.95 is: 183,482.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,844.34 : 632,636.15 = 122,346.95 : x
  2. Step 2: Convert to fraction form
    421,844.34/632,636.15 = 122,346.95/x
  3. Step 3: Cross multiply
    421,844.34x = 632,636.15 × 122,346.95
  4. Step 4: Simplify right side
    421,844.34x = 77,401,099,637.33
  5. Step 5: Solve for x
    x = 77,401,099,637.33/421,844.34
  6. Step 6: Final answer
    x = 183,482.61

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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.