Home / 385,939.89-532,195.52-305,239.59

Finding the Fourth Proportional to 385,939.89, 532,195.52 and 305,239.59

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Solution

The fourth proportional to 385,939.89, 532,195.52 and 305,239.59 is: 420,913.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,939.89 : 532,195.52 = 305,239.59 : x
  2. Step 2: Convert to fraction form
    385,939.89/532,195.52 = 305,239.59/x
  3. Step 3: Cross multiply
    385,939.89x = 532,195.52 × 305,239.59
  4. Step 4: Simplify right side
    385,939.89x = 162,447,140,798.44
  5. Step 5: Solve for x
    x = 162,447,140,798.44/385,939.89
  6. Step 6: Final answer
    x = 420,913.06

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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.