Home / 289,384.20-434,076.30-99,844.20

Finding the Fourth Proportional to 289,384.20, 434,076.30 and 99,844.20

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Solution

The fourth proportional to 289,384.20, 434,076.30 and 99,844.20 is: 149,766.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,384.20 : 434,076.30 = 99,844.20 : x
  2. Step 2: Convert to fraction form
    289,384.20/434,076.30 = 99,844.20/x
  3. Step 3: Cross multiply
    289,384.20x = 434,076.30 × 99,844.20
  4. Step 4: Simplify right side
    289,384.20x = 43,340,000,912.46
  5. Step 5: Solve for x
    x = 43,340,000,912.46/289,384.20
  6. Step 6: Final answer
    x = 149,766.30

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1.5x scale

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.