Home / 289,961.40-434,942.10-211,625.40

Finding the Fourth Proportional to 289,961.40, 434,942.10 and 211,625.40

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Solution

The fourth proportional to 289,961.40, 434,942.10 and 211,625.40 is: 317,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,961.40 : 434,942.10 = 211,625.40 : x
  2. Step 2: Convert to fraction form
    289,961.40/434,942.10 = 211,625.40/x
  3. Step 3: Cross multiply
    289,961.40x = 434,942.10 × 211,625.40
  4. Step 4: Simplify right side
    289,961.40x = 92,044,795,889.34
  5. Step 5: Solve for x
    x = 92,044,795,889.34/289,961.40
  6. Step 6: Final answer
    x = 317,438.10

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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.