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Finding the Fourth Proportional to 443,750.40, 665,662.32 and 144,112.50

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Solution

The fourth proportional to 443,750.40, 665,662.32 and 144,112.50 is: 216,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,750.40 : 665,662.32 = 144,112.50 : x
  2. Step 2: Convert to fraction form
    443,750.40/665,662.32 = 144,112.50/x
  3. Step 3: Cross multiply
    443,750.40x = 665,662.32 × 144,112.50
  4. Step 4: Simplify right side
    443,750.40x = 95,930,261,091
  5. Step 5: Solve for x
    x = 95,930,261,091/443,750.40
  6. Step 6: Final answer
    x = 216,180.68

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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.