Home / 258,736,021.20-388,104,031.80-253,634,187.60

Finding the Fourth Proportional to 258,736,021.20, 388,104,031.80 and 253,634,187.60

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Solution

The fourth proportional to 258,736,021.20, 388,104,031.80 and 253,634,187.60 is: 380,451,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,736,021.20 : 388,104,031.80 = 253,634,187.60 : x
  2. Step 2: Convert to fraction form
    258,736,021.20/388,104,031.80 = 253,634,187.60/x
  3. Step 3: Cross multiply
    258,736,021.20x = 388,104,031.80 × 253,634,187.60
  4. Step 4: Simplify right side
    258,736,021.20x = 98,436,450,809,877,568
  5. Step 5: Solve for x
    x = 98,436,450,809,877,568/258,736,021.20
  6. Step 6: Final answer
    x = 380,451,281.40

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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.