Home / 216,795,000.40-325,084,900.20-78,615,091.60

Finding the Fourth Proportional to 216,795,000.40, 325,084,900.20 and 78,615,091.60

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Solution

The fourth proportional to 216,795,000.40, 325,084,900.20 and 78,615,091.60 is: 117,883,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,795,000.40 : 325,084,900.20 = 78,615,091.60 : x
  2. Step 2: Convert to fraction form
    216,795,000.40/325,084,900.20 = 78,615,091.60/x
  3. Step 3: Cross multiply
    216,795,000.40x = 325,084,900.20 × 78,615,091.60
  4. Step 4: Simplify right side
    216,795,000.40x = 25,556,579,206,999,856
  5. Step 5: Solve for x
    x = 25,556,579,206,999,856/216,795,000.40
  6. Step 6: Final answer
    x = 117,883,618.90

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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.