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Finding the Fourth Proportional to 275,939.70, 412,925.40 and 191,302.80

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Solution

The fourth proportional to 275,939.70, 412,925.40 and 191,302.80 is: 286,271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,939.70 : 412,925.40 = 191,302.80 : x
  2. Step 2: Convert to fraction form
    275,939.70/412,925.40 = 191,302.80/x
  3. Step 3: Cross multiply
    275,939.70x = 412,925.40 × 191,302.80
  4. Step 4: Simplify right side
    275,939.70x = 78,993,785,211.12
  5. Step 5: Solve for x
    x = 78,993,785,211.12/275,939.70
  6. Step 6: Final answer
    x = 286,271.91

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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.