Home / 289,912.40-434,674.20-132,059.60

Finding the Fourth Proportional to 289,912.40, 434,674.20 and 132,059.60

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Solution

The fourth proportional to 289,912.40, 434,674.20 and 132,059.60 is: 198,000.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,912.40 : 434,674.20 = 132,059.60 : x
  2. Step 2: Convert to fraction form
    289,912.40/434,674.20 = 132,059.60/x
  3. Step 3: Cross multiply
    289,912.40x = 434,674.20 × 132,059.60
  4. Step 4: Simplify right side
    289,912.40x = 57,402,900,982.32
  5. Step 5: Solve for x
    x = 57,402,900,982.32/289,912.40
  6. Step 6: Final answer
    x = 198,000.85

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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.