Home / 384,786.98-531,005.18-215,021.12

Finding the Fourth Proportional to 384,786.98, 531,005.18 and 215,021.12

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Solution

The fourth proportional to 384,786.98, 531,005.18 and 215,021.12 is: 296,728.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,786.98 : 531,005.18 = 215,021.12 : x
  2. Step 2: Convert to fraction form
    384,786.98/531,005.18 = 215,021.12/x
  3. Step 3: Cross multiply
    384,786.98x = 531,005.18 × 215,021.12
  4. Step 4: Simplify right side
    384,786.98x = 114,177,328,529.40
  5. Step 5: Solve for x
    x = 114,177,328,529.40/384,786.98
  6. Step 6: Final answer
    x = 296,728.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.