Home / 289,927.08-434,905.20-100,396.80

Finding the Fourth Proportional to 289,927.08, 434,905.20 and 100,396.80

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Solution

The fourth proportional to 289,927.08, 434,905.20 and 100,396.80 is: 150,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,927.08 : 434,905.20 = 100,396.80 : x
  2. Step 2: Convert to fraction form
    289,927.08/434,905.20 = 100,396.80/x
  3. Step 3: Cross multiply
    289,927.08x = 434,905.20 × 100,396.80
  4. Step 4: Simplify right side
    289,927.08x = 43,663,090,383.36
  5. Step 5: Solve for x
    x = 43,663,090,383.36/289,927.08
  6. Step 6: Final answer
    x = 150,600.25

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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.