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Finding the Fourth Proportional to 235,089, 352,632.78 and 85,329.12

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Solution

The fourth proportional to 235,089, 352,632.78 and 85,329.12 is: 127,993.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,089 : 352,632.78 = 85,329.12 : x
  2. Step 2: Convert to fraction form
    235,089/352,632.78 = 85,329.12/x
  3. Step 3: Cross multiply
    235,089x = 352,632.78 × 85,329.12
  4. Step 4: Simplify right side
    235,089x = 30,089,844,800.55
  5. Step 5: Solve for x
    x = 30,089,844,800.55/235,089
  6. Step 6: Final answer
    x = 127,993.42

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1.5x scale

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.