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Finding the Fourth Proportional to 235,295.28, 353,012.16 and 85,533.21

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Solution

The fourth proportional to 235,295.28, 353,012.16 and 85,533.21 is: 128,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,295.28 : 353,012.16 = 85,533.21 : x
  2. Step 2: Convert to fraction form
    235,295.28/353,012.16 = 85,533.21/x
  3. Step 3: Cross multiply
    235,295.28x = 353,012.16 × 85,533.21
  4. Step 4: Simplify right side
    235,295.28x = 30,194,263,213.83
  5. Step 5: Solve for x
    x = 30,194,263,213.83/235,295.28
  6. Step 6: Final answer
    x = 128,324.98

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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.