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Finding the Fourth Proportional to 219,815.40, 329,716.92 and 70,064.67

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Solution

The fourth proportional to 219,815.40, 329,716.92 and 70,064.67 is: 105,095.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,815.40 : 329,716.92 = 70,064.67 : x
  2. Step 2: Convert to fraction form
    219,815.40/329,716.92 = 70,064.67/x
  3. Step 3: Cross multiply
    219,815.40x = 329,716.92 × 70,064.67
  4. Step 4: Simplify right side
    219,815.40x = 23,101,507,193.22
  5. Step 5: Solve for x
    x = 23,101,507,193.22/219,815.40
  6. Step 6: Final answer
    x = 105,095.04

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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.