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Finding the Fourth Proportional to 279,838.90, 419,758.33 and 69,476.84

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Solution

The fourth proportional to 279,838.90, 419,758.33 and 69,476.84 is: 104,215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,838.90 : 419,758.33 = 69,476.84 : x
  2. Step 2: Convert to fraction form
    279,838.90/419,758.33 = 69,476.84/x
  3. Step 3: Cross multiply
    279,838.90x = 419,758.33 × 69,476.84
  4. Step 4: Simplify right side
    279,838.90x = 29,163,482,332.08
  5. Step 5: Solve for x
    x = 29,163,482,332.08/279,838.90
  6. Step 6: Final answer
    x = 104,215.26

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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.