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Finding the Fourth Proportional to 235,292.52, 352,782.75 and 85,515.02

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Solution

The fourth proportional to 235,292.52, 352,782.75 and 85,515.02 is: 128,215.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,292.52 : 352,782.75 = 85,515.02 : x
  2. Step 2: Convert to fraction form
    235,292.52/352,782.75 = 85,515.02/x
  3. Step 3: Cross multiply
    235,292.52x = 352,782.75 × 85,515.02
  4. Step 4: Simplify right side
    235,292.52x = 30,168,222,478.67
  5. Step 5: Solve for x
    x = 30,168,222,478.67/235,292.52
  6. Step 6: Final answer
    x = 128,215.82

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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.