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Finding the Fourth Proportional to 219,017.89, 328,567.39 and 69,295.87

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Solution

The fourth proportional to 219,017.89, 328,567.39 and 69,295.87 is: 103,956.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,017.89 : 328,567.39 = 69,295.87 : x
  2. Step 2: Convert to fraction form
    219,017.89/328,567.39 = 69,295.87/x
  3. Step 3: Cross multiply
    219,017.89x = 328,567.39 × 69,295.87
  4. Step 4: Simplify right side
    219,017.89x = 22,768,363,381.15
  5. Step 5: Solve for x
    x = 22,768,363,381.15/219,017.89
  6. Step 6: Final answer
    x = 103,956.64

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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.