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Finding the Fourth Proportional to 219,128.33, 328,741.77 and 69,377.60

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Solution

The fourth proportional to 219,128.33, 328,741.77 and 69,377.60 is: 104,082.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,128.33 : 328,741.77 = 69,377.60 : x
  2. Step 2: Convert to fraction form
    219,128.33/328,741.77 = 69,377.60/x
  3. Step 3: Cross multiply
    219,128.33x = 328,741.77 × 69,377.60
  4. Step 4: Simplify right side
    219,128.33x = 22,807,315,022.35
  5. Step 5: Solve for x
    x = 22,807,315,022.35/219,128.33
  6. Step 6: Final answer
    x = 104,082.00

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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.