Home / 389,825.18-537,952.96-217,745.54

Finding the Fourth Proportional to 389,825.18, 537,952.96 and 217,745.54

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Solution

The fourth proportional to 389,825.18, 537,952.96 and 217,745.54 is: 300,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,825.18 : 537,952.96 = 217,745.54 : x
  2. Step 2: Convert to fraction form
    389,825.18/537,952.96 = 217,745.54/x
  3. Step 3: Cross multiply
    389,825.18x = 537,952.96 × 217,745.54
  4. Step 4: Simplify right side
    389,825.18x = 117,136,856,681.07
  5. Step 5: Solve for x
    x = 117,136,856,681.07/389,825.18
  6. Step 6: Final answer
    x = 300,485.61

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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.