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Finding the Fourth Proportional to 279,959,000.40, 419,938,500.60 and 126,610,059.60

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Solution

The fourth proportional to 279,959,000.40, 419,938,500.60 and 126,610,059.60 is: 189,915,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,959,000.40 : 419,938,500.60 = 126,610,059.60 : x
  2. Step 2: Convert to fraction form
    279,959,000.40/419,938,500.60 = 126,610,059.60/x
  3. Step 3: Cross multiply
    279,959,000.40x = 419,938,500.60 × 126,610,059.60
  4. Step 4: Simplify right side
    279,959,000.40x = 53,168,438,589,300,640
  5. Step 5: Solve for x
    x = 53,168,438,589,300,640/279,959,000.40
  6. Step 6: Final answer
    x = 189,915,089.40

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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.