Home / 385,148,971.16-531,505,580.24-220,140,083.60

Finding the Fourth Proportional to 385,148,971.16, 531,505,580.24 and 220,140,083.60

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Solution

The fourth proportional to 385,148,971.16, 531,505,580.24 and 220,140,083.60 is: 303,793,315.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,971.16 : 531,505,580.24 = 220,140,083.60 : x
  2. Step 2: Convert to fraction form
    385,148,971.16/531,505,580.24 = 220,140,083.60/x
  3. Step 3: Cross multiply
    385,148,971.16x = 531,505,580.24 × 220,140,083.60
  4. Step 4: Simplify right side
    385,148,971.16x = 117,005,682,867,900,112
  5. Step 5: Solve for x
    x = 117,005,682,867,900,112/385,148,971.16
  6. Step 6: Final answer
    x = 303,793,315.39

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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.