Home / 266,741.37-399,667.80-187,689.51

Finding the Fourth Proportional to 266,741.37, 399,667.80 and 187,689.51

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Solution

The fourth proportional to 266,741.37, 399,667.80 and 187,689.51 is: 281,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,741.37 : 399,667.80 = 187,689.51 : x
  2. Step 2: Convert to fraction form
    266,741.37/399,667.80 = 187,689.51/x
  3. Step 3: Cross multiply
    266,741.37x = 399,667.80 × 187,689.51
  4. Step 4: Simplify right side
    266,741.37x = 75,013,453,544.78
  5. Step 5: Solve for x
    x = 75,013,453,544.78/266,741.37
  6. Step 6: Final answer
    x = 281,221.67

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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.