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Finding the Fourth Proportional to 443,579.21, 611,501.96 and 316,033.37

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Solution

The fourth proportional to 443,579.21, 611,501.96 and 316,033.37 is: 435,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,579.21 : 611,501.96 = 316,033.37 : x
  2. Step 2: Convert to fraction form
    443,579.21/611,501.96 = 316,033.37/x
  3. Step 3: Cross multiply
    443,579.21x = 611,501.96 × 316,033.37
  4. Step 4: Simplify right side
    443,579.21x = 193,255,025,180.41
  5. Step 5: Solve for x
    x = 193,255,025,180.41/443,579.21
  6. Step 6: Final answer
    x = 435,671.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.