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Finding the Fourth Proportional to 235,329.76, 353,144.76 and 85,555.68

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Solution

The fourth proportional to 235,329.76, 353,144.76 and 85,555.68 is: 128,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,329.76 : 353,144.76 = 85,555.68 : x
  2. Step 2: Convert to fraction form
    235,329.76/353,144.76 = 85,555.68/x
  3. Step 3: Cross multiply
    235,329.76x = 353,144.76 × 85,555.68
  4. Step 4: Simplify right side
    235,329.76x = 30,213,540,080.24
  5. Step 5: Solve for x
    x = 30,213,540,080.24/235,329.76
  6. Step 6: Final answer
    x = 128,388.10

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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.