Home / 258,893,269.80-388,339,904.70-137,960,917.80

Finding the Fourth Proportional to 258,893,269.80, 388,339,904.70 and 137,960,917.80

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Solution

The fourth proportional to 258,893,269.80, 388,339,904.70 and 137,960,917.80 is: 206,941,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,893,269.80 : 388,339,904.70 = 137,960,917.80 : x
  2. Step 2: Convert to fraction form
    258,893,269.80/388,339,904.70 = 137,960,917.80/x
  3. Step 3: Cross multiply
    258,893,269.80x = 388,339,904.70 × 137,960,917.80
  4. Step 4: Simplify right side
    258,893,269.80x = 53,575,729,670,776,536
  5. Step 5: Solve for x
    x = 53,575,729,670,776,536/258,893,269.80
  6. Step 6: Final answer
    x = 206,941,376.70

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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.