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Finding the Fourth Proportional to 219,360.40, 329,040.60 and 194,428.60

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Solution

The fourth proportional to 219,360.40, 329,040.60 and 194,428.60 is: 291,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,360.40 : 329,040.60 = 194,428.60 : x
  2. Step 2: Convert to fraction form
    219,360.40/329,040.60 = 194,428.60/x
  3. Step 3: Cross multiply
    219,360.40x = 329,040.60 × 194,428.60
  4. Step 4: Simplify right side
    219,360.40x = 63,974,903,201.16
  5. Step 5: Solve for x
    x = 63,974,903,201.16/219,360.40
  6. Step 6: Final answer
    x = 291,642.90

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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.