Home / 204,289,915.20-306,434,872.80-127,699,425.60

Finding the Fourth Proportional to 204,289,915.20, 306,434,872.80 and 127,699,425.60

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Solution

The fourth proportional to 204,289,915.20, 306,434,872.80 and 127,699,425.60 is: 191,549,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,289,915.20 : 306,434,872.80 = 127,699,425.60 : x
  2. Step 2: Convert to fraction form
    204,289,915.20/306,434,872.80 = 127,699,425.60/x
  3. Step 3: Cross multiply
    204,289,915.20x = 306,434,872.80 × 127,699,425.60
  4. Step 4: Simplify right side
    204,289,915.20x = 39,131,557,240,369,064
  5. Step 5: Solve for x
    x = 39,131,557,240,369,064/204,289,915.20
  6. Step 6: Final answer
    x = 191,549,138.40

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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.