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Finding the Fourth Proportional to 303,905.50, 419,389.60 and 169,769.50

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Solution

The fourth proportional to 303,905.50, 419,389.60 and 169,769.50 is: 234,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,905.50 : 419,389.60 = 169,769.50 : x
  2. Step 2: Convert to fraction form
    303,905.50/419,389.60 = 169,769.50/x
  3. Step 3: Cross multiply
    303,905.50x = 419,389.60 × 169,769.50
  4. Step 4: Simplify right side
    303,905.50x = 71,199,562,697.20
  5. Step 5: Solve for x
    x = 71,199,562,697.20/303,905.50
  6. Step 6: Final answer
    x = 234,281.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.