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Finding the Fourth Proportional to 421,301.42, 632,111.74 and 252,939.32

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Solution

The fourth proportional to 421,301.42, 632,111.74 and 252,939.32 is: 379,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,301.42 : 632,111.74 = 252,939.32 : x
  2. Step 2: Convert to fraction form
    421,301.42/632,111.74 = 252,939.32/x
  3. Step 3: Cross multiply
    421,301.42x = 632,111.74 × 252,939.32
  4. Step 4: Simplify right side
    421,301.42x = 159,885,913,679.62
  5. Step 5: Solve for x
    x = 159,885,913,679.62/421,301.42
  6. Step 6: Final answer
    x = 379,504.81

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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.