Home / 258,904,205.20-388,095,034.20-129,312,499.60

Finding the Fourth Proportional to 258,904,205.20, 388,095,034.20 and 129,312,499.60

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Solution

The fourth proportional to 258,904,205.20, 388,095,034.20 and 129,312,499.60 is: 193,838,253.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,904,205.20 : 388,095,034.20 = 129,312,499.60 : x
  2. Step 2: Convert to fraction form
    258,904,205.20/388,095,034.20 = 129,312,499.60/x
  3. Step 3: Cross multiply
    258,904,205.20x = 388,095,034.20 × 129,312,499.60
  4. Step 4: Simplify right side
    258,904,205.20x = 50,185,538,954,749,480
  5. Step 5: Solve for x
    x = 50,185,538,954,749,480/258,904,205.20
  6. Step 6: Final answer
    x = 193,838,253.48

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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.