Home / 219,036.80-328,555.20-189,512.30

Finding the Fourth Proportional to 219,036.80, 328,555.20 and 189,512.30

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Solution

The fourth proportional to 219,036.80, 328,555.20 and 189,512.30 is: 284,268.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,036.80 : 328,555.20 = 189,512.30 : x
  2. Step 2: Convert to fraction form
    219,036.80/328,555.20 = 189,512.30/x
  3. Step 3: Cross multiply
    219,036.80x = 328,555.20 × 189,512.30
  4. Step 4: Simplify right side
    219,036.80x = 62,265,251,628.96
  5. Step 5: Solve for x
    x = 62,265,251,628.96/219,036.80
  6. Step 6: Final answer
    x = 284,268.45

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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.