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Finding the Fourth Proportional to 298,638.40, 447,957.60 and 264,812.80

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Solution

The fourth proportional to 298,638.40, 447,957.60 and 264,812.80 is: 397,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,638.40 : 447,957.60 = 264,812.80 : x
  2. Step 2: Convert to fraction form
    298,638.40/447,957.60 = 264,812.80/x
  3. Step 3: Cross multiply
    298,638.40x = 447,957.60 × 264,812.80
  4. Step 4: Simplify right side
    298,638.40x = 118,624,906,337.28
  5. Step 5: Solve for x
    x = 118,624,906,337.28/298,638.40
  6. Step 6: Final answer
    x = 397,219.20

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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.