Home / 219,020.24-328,389.11-85,913.95

Finding the Fourth Proportional to 219,020.24, 328,389.11 and 85,913.95

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Solution

The fourth proportional to 219,020.24, 328,389.11 and 85,913.95 is: 128,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,020.24 : 328,389.11 = 85,913.95 : x
  2. Step 2: Convert to fraction form
    219,020.24/328,389.11 = 85,913.95/x
  3. Step 3: Cross multiply
    219,020.24x = 328,389.11 × 85,913.95
  4. Step 4: Simplify right side
    219,020.24x = 28,213,205,506.08
  5. Step 5: Solve for x
    x = 28,213,205,506.08/219,020.24
  6. Step 6: Final answer
    x = 128,815.52

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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.