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Finding the Fourth Proportional to 235,038.54, 352,697.89 and 85,290.51

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Solution

The fourth proportional to 235,038.54, 352,697.89 and 85,290.51 is: 127,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,038.54 : 352,697.89 = 85,290.51 : x
  2. Step 2: Convert to fraction form
    235,038.54/352,697.89 = 85,290.51/x
  3. Step 3: Cross multiply
    235,038.54x = 352,697.89 × 85,290.51
  4. Step 4: Simplify right side
    235,038.54x = 30,081,782,914.02
  5. Step 5: Solve for x
    x = 30,081,782,914.02/235,038.54
  6. Step 6: Final answer
    x = 127,986.60

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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.