Home / 318,969,962.40-478,678,892.40-137,347,485.60

Finding the Fourth Proportional to 318,969,962.40, 478,678,892.40 and 137,347,485.60

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Solution

The fourth proportional to 318,969,962.40, 478,678,892.40 and 137,347,485.60 is: 206,117,660.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,969,962.40 : 478,678,892.40 = 137,347,485.60 : x
  2. Step 2: Convert to fraction form
    318,969,962.40/478,678,892.40 = 137,347,485.60/x
  3. Step 3: Cross multiply
    318,969,962.40x = 478,678,892.40 × 137,347,485.60
  4. Step 4: Simplify right side
    318,969,962.40x = 65,745,342,280,932,944
  5. Step 5: Solve for x
    x = 65,745,342,280,932,944/318,969,962.40
  6. Step 6: Final answer
    x = 206,117,660.07

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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.