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Finding the Fourth Proportional to 443,762.40, 665,740.80 and 219,230.40

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Solution

The fourth proportional to 443,762.40, 665,740.80 and 219,230.40 is: 328,893.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,762.40 : 665,740.80 = 219,230.40 : x
  2. Step 2: Convert to fraction form
    443,762.40/665,740.80 = 219,230.40/x
  3. Step 3: Cross multiply
    443,762.40x = 665,740.80 × 219,230.40
  4. Step 4: Simplify right side
    443,762.40x = 145,950,621,880.32
  5. Step 5: Solve for x
    x = 145,950,621,880.32/443,762.40
  6. Step 6: Final answer
    x = 328,893.62

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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.