Home / 258,959,660.80-388,327,516.80-129,517,254.40

Finding the Fourth Proportional to 258,959,660.80, 388,327,516.80 and 129,517,254.40

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Solution

The fourth proportional to 258,959,660.80, 388,327,516.80 and 129,517,254.40 is: 194,219,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,959,660.80 : 388,327,516.80 = 129,517,254.40 : x
  2. Step 2: Convert to fraction form
    258,959,660.80/388,327,516.80 = 129,517,254.40/x
  3. Step 3: Cross multiply
    258,959,660.80x = 388,327,516.80 × 129,517,254.40
  4. Step 4: Simplify right side
    258,959,660.80x = 50,295,113,783,905,880
  5. Step 5: Solve for x
    x = 50,295,113,783,905,880/258,959,660.80
  6. Step 6: Final answer
    x = 194,219,878.22

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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.