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Finding the Fourth Proportional to 279,030.10, 418,299.56 and 110,668.64

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Solution

The fourth proportional to 279,030.10, 418,299.56 and 110,668.64 is: 165,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,030.10 : 418,299.56 = 110,668.64 : x
  2. Step 2: Convert to fraction form
    279,030.10/418,299.56 = 110,668.64/x
  3. Step 3: Cross multiply
    279,030.10x = 418,299.56 × 110,668.64
  4. Step 4: Simplify right side
    279,030.10x = 46,292,643,417.80
  5. Step 5: Solve for x
    x = 46,292,643,417.80/279,030.10
  6. Step 6: Final answer
    x = 165,905.55

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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.