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Finding the Fourth Proportional to 221,907,913.60, 332,862,907.20 and 78,300,745.60

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Solution

The fourth proportional to 221,907,913.60, 332,862,907.20 and 78,300,745.60 is: 117,451,484.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,907,913.60 : 332,862,907.20 = 78,300,745.60 : x
  2. Step 2: Convert to fraction form
    221,907,913.60/332,862,907.20 = 78,300,745.60/x
  3. Step 3: Cross multiply
    221,907,913.60x = 332,862,907.20 × 78,300,745.60
  4. Step 4: Simplify right side
    221,907,913.60x = 26,063,413,816,343,604
  5. Step 5: Solve for x
    x = 26,063,413,816,343,604/221,907,913.60
  6. Step 6: Final answer
    x = 117,451,484.24

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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.