Home / 330,025.08-455,356.54-186,785.12

Finding the Fourth Proportional to 330,025.08, 455,356.54 and 186,785.12

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Solution

The fourth proportional to 330,025.08, 455,356.54 and 186,785.12 is: 257,719.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,025.08 : 455,356.54 = 186,785.12 : x
  2. Step 2: Convert to fraction form
    330,025.08/455,356.54 = 186,785.12/x
  3. Step 3: Cross multiply
    330,025.08x = 455,356.54 × 186,785.12
  4. Step 4: Simplify right side
    330,025.08x = 85,053,825,966.68
  5. Step 5: Solve for x
    x = 85,053,825,966.68/330,025.08
  6. Step 6: Final answer
    x = 257,719.28

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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.