Home / 219,025.43-328,540.76-85,968.35

Finding the Fourth Proportional to 219,025.43, 328,540.76 and 85,968.35

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Solution

The fourth proportional to 219,025.43, 328,540.76 and 85,968.35 is: 128,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,025.43 : 328,540.76 = 85,968.35 : x
  2. Step 2: Convert to fraction form
    219,025.43/328,540.76 = 85,968.35/x
  3. Step 3: Cross multiply
    219,025.43x = 328,540.76 × 85,968.35
  4. Step 4: Simplify right side
    219,025.43x = 28,244,106,615.10
  5. Step 5: Solve for x
    x = 28,244,106,615.10/219,025.43
  6. Step 6: Final answer
    x = 128,953.55

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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.