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Finding the Fourth Proportional to 279,409.64, 419,110.36 and 69,047.58

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Solution

The fourth proportional to 279,409.64, 419,110.36 and 69,047.58 is: 103,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,409.64 : 419,110.36 = 69,047.58 : x
  2. Step 2: Convert to fraction form
    279,409.64/419,110.36 = 69,047.58/x
  3. Step 3: Cross multiply
    279,409.64x = 419,110.36 × 69,047.58
  4. Step 4: Simplify right side
    279,409.64x = 28,938,553,670.14
  5. Step 5: Solve for x
    x = 28,938,553,670.14/279,409.64
  6. Step 6: Final answer
    x = 103,570.35

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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.