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Finding the Fourth Proportional to 443,292.40, 664,501.20 and 218,468.80

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Solution

The fourth proportional to 443,292.40, 664,501.20 and 218,468.80 is: 327,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,292.40 : 664,501.20 = 218,468.80 : x
  2. Step 2: Convert to fraction form
    443,292.40/664,501.20 = 218,468.80/x
  3. Step 3: Cross multiply
    443,292.40x = 664,501.20 × 218,468.80
  4. Step 4: Simplify right side
    443,292.40x = 145,172,779,762.56
  5. Step 5: Solve for x
    x = 145,172,779,762.56/443,292.40
  6. Step 6: Final answer
    x = 327,487.64

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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.