Home / 354,360,800.80-531,541,201.20-258,809,312.80

Finding the Fourth Proportional to 354,360,800.80, 531,541,201.20 and 258,809,312.80

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Solution

The fourth proportional to 354,360,800.80, 531,541,201.20 and 258,809,312.80 is: 388,213,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,360,800.80 : 531,541,201.20 = 258,809,312.80 : x
  2. Step 2: Convert to fraction form
    354,360,800.80/531,541,201.20 = 258,809,312.80/x
  3. Step 3: Cross multiply
    354,360,800.80x = 531,541,201.20 × 258,809,312.80
  4. Step 4: Simplify right side
    354,360,800.80x = 137,567,813,007,458,544
  5. Step 5: Solve for x
    x = 137,567,813,007,458,544/354,360,800.80
  6. Step 6: Final answer
    x = 388,213,969.20

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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.