Home / 268,258,999.80-402,388,499.70-252,386,628.60

Finding the Fourth Proportional to 268,258,999.80, 402,388,499.70 and 252,386,628.60

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Solution

The fourth proportional to 268,258,999.80, 402,388,499.70 and 252,386,628.60 is: 378,579,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,258,999.80 : 402,388,499.70 = 252,386,628.60 : x
  2. Step 2: Convert to fraction form
    268,258,999.80/402,388,499.70 = 252,386,628.60/x
  3. Step 3: Cross multiply
    268,258,999.80x = 402,388,499.70 × 252,386,628.60
  4. Step 4: Simplify right side
    268,258,999.80x = 101,557,476,826,695,104
  5. Step 5: Solve for x
    x = 101,557,476,826,695,104/268,258,999.80
  6. Step 6: Final answer
    x = 378,579,942.90

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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.