Home / 289,927.86-434,787.60-100,336.78

Finding the Fourth Proportional to 289,927.86, 434,787.60 and 100,336.78

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Solution

The fourth proportional to 289,927.86, 434,787.60 and 100,336.78 is: 150,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,927.86 : 434,787.60 = 100,336.78 : x
  2. Step 2: Convert to fraction form
    289,927.86/434,787.60 = 100,336.78/x
  3. Step 3: Cross multiply
    289,927.86x = 434,787.60 × 100,336.78
  4. Step 4: Simplify right side
    289,927.86x = 43,625,185,677.60
  5. Step 5: Solve for x
    x = 43,625,185,677.60/289,927.86
  6. Step 6: Final answer
    x = 150,469.11

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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.