Home / 219,147.66-328,588.44-85,868.23

Finding the Fourth Proportional to 219,147.66, 328,588.44 and 85,868.23

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Solution

The fourth proportional to 219,147.66, 328,588.44 and 85,868.23 is: 128,750.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,147.66 : 328,588.44 = 85,868.23 : x
  2. Step 2: Convert to fraction form
    219,147.66/328,588.44 = 85,868.23/x
  3. Step 3: Cross multiply
    219,147.66x = 328,588.44 × 85,868.23
  4. Step 4: Simplify right side
    219,147.66x = 28,215,307,741.26
  5. Step 5: Solve for x
    x = 28,215,307,741.26/219,147.66
  6. Step 6: Final answer
    x = 128,750.21

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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.