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Finding the Fourth Proportional to 219,241.68, 328,871.67 and 69,478.66

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Solution

The fourth proportional to 219,241.68, 328,871.67 and 69,478.66 is: 104,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,241.68 : 328,871.67 = 69,478.66 : x
  2. Step 2: Convert to fraction form
    219,241.68/328,871.67 = 69,478.66/x
  3. Step 3: Cross multiply
    219,241.68x = 328,871.67 × 69,478.66
  4. Step 4: Simplify right side
    219,241.68x = 22,849,562,943.56
  5. Step 5: Solve for x
    x = 22,849,562,943.56/219,241.68
  6. Step 6: Final answer
    x = 104,220.89

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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.