Home / 258,904,007.20-388,094,737.20-129,312,301.60

Finding the Fourth Proportional to 258,904,007.20, 388,094,737.20 and 129,312,301.60

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Solution

The fourth proportional to 258,904,007.20, 388,094,737.20 and 129,312,301.60 is: 193,837,956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,904,007.20 : 388,094,737.20 = 129,312,301.60 : x
  2. Step 2: Convert to fraction form
    258,904,007.20/388,094,737.20 = 129,312,301.60/x
  3. Step 3: Cross multiply
    258,904,007.20x = 388,094,737.20 × 129,312,301.60
  4. Step 4: Simplify right side
    258,904,007.20x = 50,185,423,706,179,136
  5. Step 5: Solve for x
    x = 50,185,423,706,179,136/258,904,007.20
  6. Step 6: Final answer
    x = 193,837,956.58

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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.