Home / 419,988.29-629,807.28-131,725.67

Finding the Fourth Proportional to 419,988.29, 629,807.28 and 131,725.67

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Solution

The fourth proportional to 419,988.29, 629,807.28 and 131,725.67 is: 197,533.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,988.29 : 629,807.28 = 131,725.67 : x
  2. Step 2: Convert to fraction form
    419,988.29/629,807.28 = 131,725.67/x
  3. Step 3: Cross multiply
    419,988.29x = 629,807.28 × 131,725.67
  4. Step 4: Simplify right side
    419,988.29x = 82,961,785,928.88
  5. Step 5: Solve for x
    x = 82,961,785,928.88/419,988.29
  6. Step 6: Final answer
    x = 197,533.57

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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.