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Finding the Fourth Proportional to 443,854.23, 666,126.59 and 309,864.39

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Solution

The fourth proportional to 443,854.23, 666,126.59 and 309,864.39 is: 465,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,854.23 : 666,126.59 = 309,864.39 : x
  2. Step 2: Convert to fraction form
    443,854.23/666,126.59 = 309,864.39/x
  3. Step 3: Cross multiply
    443,854.23x = 666,126.59 × 309,864.39
  4. Step 4: Simplify right side
    443,854.23x = 206,408,907,923.81
  5. Step 5: Solve for x
    x = 206,408,907,923.81/443,854.23
  6. Step 6: Final answer
    x = 465,037.60

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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.