Home / 219,017.39-328,561.59-85,825.43

Finding the Fourth Proportional to 219,017.39, 328,561.59 and 85,825.43

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Solution

The fourth proportional to 219,017.39, 328,561.59 and 85,825.43 is: 128,752.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,017.39 : 328,561.59 = 85,825.43 : x
  2. Step 2: Convert to fraction form
    219,017.39/328,561.59 = 85,825.43/x
  3. Step 3: Cross multiply
    219,017.39x = 328,561.59 × 85,825.43
  4. Step 4: Simplify right side
    219,017.39x = 28,198,939,743.23
  5. Step 5: Solve for x
    x = 28,198,939,743.23/219,017.39
  6. Step 6: Final answer
    x = 128,752.06

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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.