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Finding the Fourth Proportional to 219,306.69, 328,971.78 and 69,558.35

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Solution

The fourth proportional to 219,306.69, 328,971.78 and 69,558.35 is: 104,341.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,306.69 : 328,971.78 = 69,558.35 : x
  2. Step 2: Convert to fraction form
    219,306.69/328,971.78 = 69,558.35/x
  3. Step 3: Cross multiply
    219,306.69x = 328,971.78 × 69,558.35
  4. Step 4: Simplify right side
    219,306.69x = 22,882,732,568.50
  5. Step 5: Solve for x
    x = 22,882,732,568.50/219,306.69
  6. Step 6: Final answer
    x = 104,341.24

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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.