Home / 290,195.46-434,778.30-121,343.67

Finding the Fourth Proportional to 290,195.46, 434,778.30 and 121,343.67

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Solution

The fourth proportional to 290,195.46, 434,778.30 and 121,343.67 is: 181,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,195.46 : 434,778.30 = 121,343.67 : x
  2. Step 2: Convert to fraction form
    290,195.46/434,778.30 = 121,343.67/x
  3. Step 3: Cross multiply
    290,195.46x = 434,778.30 × 121,343.67
  4. Step 4: Simplify right side
    290,195.46x = 52,757,594,558.36
  5. Step 5: Solve for x
    x = 52,757,594,558.36/290,195.46
  6. Step 6: Final answer
    x = 181,800.21

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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.