Home / 278,836,113.30-384,791,709.56-153,385,608.84

Finding the Fourth Proportional to 278,836,113.30, 384,791,709.56 and 153,385,608.84

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Solution

The fourth proportional to 278,836,113.30, 384,791,709.56 and 153,385,608.84 is: 211,670,970.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,836,113.30 : 384,791,709.56 = 153,385,608.84 : x
  2. Step 2: Convert to fraction form
    278,836,113.30/384,791,709.56 = 153,385,608.84/x
  3. Step 3: Cross multiply
    278,836,113.30x = 384,791,709.56 × 153,385,608.84
  4. Step 4: Simplify right side
    278,836,113.30x = 59,021,510,647,445,048
  5. Step 5: Solve for x
    x = 59,021,510,647,445,048/278,836,113.30
  6. Step 6: Final answer
    x = 211,670,970.27

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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.