Home / 231,439,338.30-347,020,438.89-78,081,999.42

Finding the Fourth Proportional to 231,439,338.30, 347,020,438.89 and 78,081,999.42

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Solution

The fourth proportional to 231,439,338.30, 347,020,438.89 and 78,081,999.42 is: 117,076,249.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,439,338.30 : 347,020,438.89 = 78,081,999.42 : x
  2. Step 2: Convert to fraction form
    231,439,338.30/347,020,438.89 = 78,081,999.42/x
  3. Step 3: Cross multiply
    231,439,338.30x = 347,020,438.89 × 78,081,999.42
  4. Step 4: Simplify right side
    231,439,338.30x = 27,096,049,708,137,124
  5. Step 5: Solve for x
    x = 27,096,049,708,137,124/231,439,338.30
  6. Step 6: Final answer
    x = 117,076,249.47

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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.