Home / 219,013.80-328,556.16-85,821.84

Finding the Fourth Proportional to 219,013.80, 328,556.16 and 85,821.84

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Solution

The fourth proportional to 219,013.80, 328,556.16 and 85,821.84 is: 128,746.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,013.80 : 328,556.16 = 85,821.84 : x
  2. Step 2: Convert to fraction form
    219,013.80/328,556.16 = 85,821.84/x
  3. Step 3: Cross multiply
    219,013.80x = 328,556.16 × 85,821.84
  4. Step 4: Simplify right side
    219,013.80x = 28,197,294,194.53
  5. Step 5: Solve for x
    x = 28,197,294,194.53/219,013.80
  6. Step 6: Final answer
    x = 128,746.66

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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.