Home / 221,223,789.30-331,851,627.21-84,909,172.80

Finding the Fourth Proportional to 221,223,789.30, 331,851,627.21 and 84,909,172.80

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Solution

The fourth proportional to 221,223,789.30, 331,851,627.21 and 84,909,172.80 is: 127,369,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,223,789.30 : 331,851,627.21 = 84,909,172.80 : x
  2. Step 2: Convert to fraction form
    221,223,789.30/331,851,627.21 = 84,909,172.80/x
  3. Step 3: Cross multiply
    221,223,789.30x = 331,851,627.21 × 84,909,172.80
  4. Step 4: Simplify right side
    221,223,789.30x = 28,177,247,158,735,068
  5. Step 5: Solve for x
    x = 28,177,247,158,735,068/221,223,789.30
  6. Step 6: Final answer
    x = 127,369,878.47

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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.