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Finding the Fourth Proportional to 289,362.80, 434,044.20 and 269,087.60

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Solution

The fourth proportional to 289,362.80, 434,044.20 and 269,087.60 is: 403,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,362.80 : 434,044.20 = 269,087.60 : x
  2. Step 2: Convert to fraction form
    289,362.80/434,044.20 = 269,087.60/x
  3. Step 3: Cross multiply
    289,362.80x = 434,044.20 × 269,087.60
  4. Step 4: Simplify right side
    289,362.80x = 116,795,912,071.92
  5. Step 5: Solve for x
    x = 116,795,912,071.92/289,362.80
  6. Step 6: Final answer
    x = 403,631.40

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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.