Home / 219,428.46-328,961.25-100,999.98

Finding the Fourth Proportional to 219,428.46, 328,961.25 and 100,999.98

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Solution

The fourth proportional to 219,428.46, 328,961.25 and 100,999.98 is: 151,416.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,428.46 : 328,961.25 = 100,999.98 : x
  2. Step 2: Convert to fraction form
    219,428.46/328,961.25 = 100,999.98/x
  3. Step 3: Cross multiply
    219,428.46x = 328,961.25 × 100,999.98
  4. Step 4: Simplify right side
    219,428.46x = 33,225,079,670.78
  5. Step 5: Solve for x
    x = 33,225,079,670.78/219,428.46
  6. Step 6: Final answer
    x = 151,416.46

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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.