Home / 309,382,444,485.28-426,947,793,920.72-172,202,326,763.80

Finding the Fourth Proportional to 309,382,444,485.28, 426,947,793,920.72 and 172,202,326,763.80

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Solution

The fourth proportional to 309,382,444,485.28, 426,947,793,920.72 and 172,202,326,763.80 is: 237,639,222,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,382,444,485.28 : 426,947,793,920.72 = 172,202,326,763.80 : x
  2. Step 2: Convert to fraction form
    309,382,444,485.28/426,947,793,920.72 = 172,202,326,763.80/x
  3. Step 3: Cross multiply
    309,382,444,485.28x = 426,947,793,920.72 × 172,202,326,763.80
  4. Step 4: Simplify right side
    309,382,444,485.28x = 73,521,403,519,819,361,288,192
  5. Step 5: Solve for x
    x = 73,521,403,519,819,361,288,192/309,382,444,485.28
  6. Step 6: Final answer
    x = 237,639,222,361.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.