Home / 389,915.20-584,435.40-200,302.30

Finding the Fourth Proportional to 389,915.20, 584,435.40 and 200,302.30

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Solution

The fourth proportional to 389,915.20, 584,435.40 and 200,302.30 is: 300,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,915.20 : 584,435.40 = 200,302.30 : x
  2. Step 2: Convert to fraction form
    389,915.20/584,435.40 = 200,302.30/x
  3. Step 3: Cross multiply
    389,915.20x = 584,435.40 × 200,302.30
  4. Step 4: Simplify right side
    389,915.20x = 117,063,754,821.42
  5. Step 5: Solve for x
    x = 117,063,754,821.42/389,915.20
  6. Step 6: Final answer
    x = 300,228.75

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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.