Home / 289,428.20-434,142.30-162,938.60

Finding the Fourth Proportional to 289,428.20, 434,142.30 and 162,938.60

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Solution

The fourth proportional to 289,428.20, 434,142.30 and 162,938.60 is: 244,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,428.20 : 434,142.30 = 162,938.60 : x
  2. Step 2: Convert to fraction form
    289,428.20/434,142.30 = 162,938.60/x
  3. Step 3: Cross multiply
    289,428.20x = 434,142.30 × 162,938.60
  4. Step 4: Simplify right side
    289,428.20x = 70,738,538,562.78
  5. Step 5: Solve for x
    x = 70,738,538,562.78/289,428.20
  6. Step 6: Final answer
    x = 244,407.90

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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.