Home / 213,297,428.18-319,665,224.00-90,323,581.55

Finding the Fourth Proportional to 213,297,428.18, 319,665,224.00 and 90,323,581.55

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Solution

The fourth proportional to 213,297,428.18, 319,665,224.00 and 90,323,581.55 is: 135,366,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,297,428.18 : 319,665,224.00 = 90,323,581.55 : x
  2. Step 2: Convert to fraction form
    213,297,428.18/319,665,224.00 = 90,323,581.55/x
  3. Step 3: Cross multiply
    213,297,428.18x = 319,665,224.00 × 90,323,581.55
  4. Step 4: Simplify right side
    213,297,428.18x = 28,873,307,927,290,500
  5. Step 5: Solve for x
    x = 28,873,307,927,290,500/213,297,428.18
  6. Step 6: Final answer
    x = 135,366,413.81

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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.