Home / 258,826,752,128.80-388,240,128,193.20-126,260,707,866.40

Finding the Fourth Proportional to 258,826,752,128.80, 388,240,128,193.20 and 126,260,707,866.40

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Solution

The fourth proportional to 258,826,752,128.80, 388,240,128,193.20 and 126,260,707,866.40 is: 189,391,061,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,826,752,128.80 : 388,240,128,193.20 = 126,260,707,866.40 : x
  2. Step 2: Convert to fraction form
    258,826,752,128.80/388,240,128,193.20 = 126,260,707,866.40/x
  3. Step 3: Cross multiply
    258,826,752,128.80x = 388,240,128,193.20 × 126,260,707,866.40
  4. Step 4: Simplify right side
    258,826,752,128.80x = 49,019,473,407,815,310,114,816
  5. Step 5: Solve for x
    x = 49,019,473,407,815,310,114,816/258,826,752,128.80
  6. Step 6: Final answer
    x = 189,391,061,799.60

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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.