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Finding the Fourth Proportional to 219,869.40, 329,804.10 and 149,885.40

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Solution

The fourth proportional to 219,869.40, 329,804.10 and 149,885.40 is: 224,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,869.40 : 329,804.10 = 149,885.40 : x
  2. Step 2: Convert to fraction form
    219,869.40/329,804.10 = 149,885.40/x
  3. Step 3: Cross multiply
    219,869.40x = 329,804.10 × 149,885.40
  4. Step 4: Simplify right side
    219,869.40x = 49,432,819,450.14
  5. Step 5: Solve for x
    x = 49,432,819,450.14/219,869.40
  6. Step 6: Final answer
    x = 224,828.10

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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.