Home / 303,091.20-417,268.80-288,129.60

Finding the Fourth Proportional to 303,091.20, 417,268.80 and 288,129.60

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Solution

The fourth proportional to 303,091.20, 417,268.80 and 288,129.60 is: 396,671.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,091.20 : 417,268.80 = 288,129.60 : x
  2. Step 2: Convert to fraction form
    303,091.20/417,268.80 = 288,129.60/x
  3. Step 3: Cross multiply
    303,091.20x = 417,268.80 × 288,129.60
  4. Step 4: Simplify right side
    303,091.20x = 120,227,492,436.48
  5. Step 5: Solve for x
    x = 120,227,492,436.48/303,091.20
  6. Step 6: Final answer
    x = 396,671.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.