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Finding the Fourth Proportional to 219,314.32, 328,977.72 and 69,555.28

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Solution

The fourth proportional to 219,314.32, 328,977.72 and 69,555.28 is: 104,334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,314.32 : 328,977.72 = 69,555.28 : x
  2. Step 2: Convert to fraction form
    219,314.32/328,977.72 = 69,555.28/x
  3. Step 3: Cross multiply
    219,314.32x = 328,977.72 × 69,555.28
  4. Step 4: Simplify right side
    219,314.32x = 22,882,137,428.36
  5. Step 5: Solve for x
    x = 22,882,137,428.36/219,314.32
  6. Step 6: Final answer
    x = 104,334.90

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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.