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Finding the Fourth Proportional to 235,125.60, 352,720.80 and 85,329.60

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Solution

The fourth proportional to 235,125.60, 352,720.80 and 85,329.60 is: 128,006.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,125.60 : 352,720.80 = 85,329.60 : x
  2. Step 2: Convert to fraction form
    235,125.60/352,720.80 = 85,329.60/x
  3. Step 3: Cross multiply
    235,125.60x = 352,720.80 × 85,329.60
  4. Step 4: Simplify right side
    235,125.60x = 30,097,524,775.68
  5. Step 5: Solve for x
    x = 30,097,524,775.68/235,125.60
  6. Step 6: Final answer
    x = 128,006.16

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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.