Home / 421,815.36-632,727.84-141,333.12

Finding the Fourth Proportional to 421,815.36, 632,727.84 and 141,333.12

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Solution

The fourth proportional to 421,815.36, 632,727.84 and 141,333.12 is: 212,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,815.36 : 632,727.84 = 141,333.12 : x
  2. Step 2: Convert to fraction form
    421,815.36/632,727.84 = 141,333.12/x
  3. Step 3: Cross multiply
    421,815.36x = 632,727.84 × 141,333.12
  4. Step 4: Simplify right side
    421,815.36x = 89,425,399,738.06
  5. Step 5: Solve for x
    x = 89,425,399,738.06/421,815.36
  6. Step 6: Final answer
    x = 212,001.29

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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.