Home / 221,939,969.60-332,909,954.40-78,347,316.80

Finding the Fourth Proportional to 221,939,969.60, 332,909,954.40 and 78,347,316.80

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Solution

The fourth proportional to 221,939,969.60, 332,909,954.40 and 78,347,316.80 is: 117,520,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,939,969.60 : 332,909,954.40 = 78,347,316.80 : x
  2. Step 2: Convert to fraction form
    221,939,969.60/332,909,954.40 = 78,347,316.80/x
  3. Step 3: Cross multiply
    221,939,969.60x = 332,909,954.40 × 78,347,316.80
  4. Step 4: Simplify right side
    221,939,969.60x = 26,082,601,663,250,352
  5. Step 5: Solve for x
    x = 26,082,601,663,250,352/221,939,969.60
  6. Step 6: Final answer
    x = 117,520,975.20

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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.