Home / 421,269.96-631,904.94-140,787.22

Finding the Fourth Proportional to 421,269.96, 631,904.94 and 140,787.22

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Solution

The fourth proportional to 421,269.96, 631,904.94 and 140,787.22 is: 211,180.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,269.96 : 631,904.94 = 140,787.22 : x
  2. Step 2: Convert to fraction form
    421,269.96/631,904.94 = 140,787.22/x
  3. Step 3: Cross multiply
    421,269.96x = 631,904.94 × 140,787.22
  4. Step 4: Simplify right side
    421,269.96x = 88,964,139,806.87
  5. Step 5: Solve for x
    x = 88,964,139,806.87/421,269.96
  6. Step 6: Final answer
    x = 211,180.83

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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.