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Finding the Fourth Proportional to 320,173.44, 480,268.80 and 83,510.88

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Solution

The fourth proportional to 320,173.44, 480,268.80 and 83,510.88 is: 125,268.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,173.44 : 480,268.80 = 83,510.88 : x
  2. Step 2: Convert to fraction form
    320,173.44/480,268.80 = 83,510.88/x
  3. Step 3: Cross multiply
    320,173.44x = 480,268.80 × 83,510.88
  4. Step 4: Simplify right side
    320,173.44x = 40,107,670,124.54
  5. Step 5: Solve for x
    x = 40,107,670,124.54/320,173.44
  6. Step 6: Final answer
    x = 125,268.57

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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.