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Finding the Fourth Proportional to 443,328.40, 664,555.20 and 218,504.80

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Solution

The fourth proportional to 443,328.40, 664,555.20 and 218,504.80 is: 327,541.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,328.40 : 664,555.20 = 218,504.80 : x
  2. Step 2: Convert to fraction form
    443,328.40/664,555.20 = 218,504.80/x
  3. Step 3: Cross multiply
    443,328.40x = 664,555.20 × 218,504.80
  4. Step 4: Simplify right side
    443,328.40x = 145,208,501,064.96
  5. Step 5: Solve for x
    x = 145,208,501,064.96/443,328.40
  6. Step 6: Final answer
    x = 327,541.62

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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.