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Finding the Fourth Proportional to 298,912.60, 448,368.90 and 220,180.60

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Solution

The fourth proportional to 298,912.60, 448,368.90 and 220,180.60 is: 330,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,912.60 : 448,368.90 = 220,180.60 : x
  2. Step 2: Convert to fraction form
    298,912.60/448,368.90 = 220,180.60/x
  3. Step 3: Cross multiply
    298,912.60x = 448,368.90 × 220,180.60
  4. Step 4: Simplify right side
    298,912.60x = 98,722,133,423.34
  5. Step 5: Solve for x
    x = 98,722,133,423.34/298,912.60
  6. Step 6: Final answer
    x = 330,270.90

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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.