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Finding the Fourth Proportional to 219,120.84, 328,730.48 and 69,370.12

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Solution

The fourth proportional to 219,120.84, 328,730.48 and 69,370.12 is: 104,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,120.84 : 328,730.48 = 69,370.12 : x
  2. Step 2: Convert to fraction form
    219,120.84/328,730.48 = 69,370.12/x
  3. Step 3: Cross multiply
    219,120.84x = 328,730.48 × 69,370.12
  4. Step 4: Simplify right side
    219,120.84x = 22,804,072,845.26
  5. Step 5: Solve for x
    x = 22,804,072,845.26/219,120.84
  6. Step 6: Final answer
    x = 104,070.76

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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.