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Finding the Fourth Proportional to 279,497.40, 419,213.70 and 79,848.60

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Solution

The fourth proportional to 279,497.40, 419,213.70 and 79,848.60 is: 119,763.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,497.40 : 419,213.70 = 79,848.60 : x
  2. Step 2: Convert to fraction form
    279,497.40/419,213.70 = 79,848.60/x
  3. Step 3: Cross multiply
    279,497.40x = 419,213.70 × 79,848.60
  4. Step 4: Simplify right side
    279,497.40x = 33,473,627,045.82
  5. Step 5: Solve for x
    x = 33,473,627,045.82/279,497.40
  6. Step 6: Final answer
    x = 119,763.64

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1.5x scale

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.