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Finding the Fourth Proportional to 219,166.45, 328,746.08 and 69,406.50

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Solution

The fourth proportional to 219,166.45, 328,746.08 and 69,406.50 is: 104,108.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,166.45 : 328,746.08 = 69,406.50 : x
  2. Step 2: Convert to fraction form
    219,166.45/328,746.08 = 69,406.50/x
  3. Step 3: Cross multiply
    219,166.45x = 328,746.08 × 69,406.50
  4. Step 4: Simplify right side
    219,166.45x = 22,817,113,336.44
  5. Step 5: Solve for x
    x = 22,817,113,336.44/219,166.45
  6. Step 6: Final answer
    x = 104,108.61

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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.