Home / 389,853.21-537,940.18-217,749.97

Finding the Fourth Proportional to 389,853.21, 537,940.18 and 217,749.97

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Solution

The fourth proportional to 389,853.21, 537,940.18 and 217,749.97 is: 300,462.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,853.21 : 537,940.18 = 217,749.97 : x
  2. Step 2: Convert to fraction form
    389,853.21/537,940.18 = 217,749.97/x
  3. Step 3: Cross multiply
    389,853.21x = 537,940.18 × 217,749.97
  4. Step 4: Simplify right side
    389,853.21x = 117,136,457,776.56
  5. Step 5: Solve for x
    x = 117,136,457,776.56/389,853.21
  6. Step 6: Final answer
    x = 300,462.98

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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.