Home / 258,978,266.80-388,405,192.20-149,566,836.40

Finding the Fourth Proportional to 258,978,266.80, 388,405,192.20 and 149,566,836.40

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Solution

The fourth proportional to 258,978,266.80, 388,405,192.20 and 149,566,836.40 is: 224,314,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,978,266.80 : 388,405,192.20 = 149,566,836.40 : x
  2. Step 2: Convert to fraction form
    258,978,266.80/388,405,192.20 = 149,566,836.40/x
  3. Step 3: Cross multiply
    258,978,266.80x = 388,405,192.20 × 149,566,836.40
  4. Step 4: Simplify right side
    258,978,266.80x = 58,092,535,838,687,960
  5. Step 5: Solve for x
    x = 58,092,535,838,687,960/258,978,266.80
  6. Step 6: Final answer
    x = 224,314,327.83

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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.