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Finding the Fourth Proportional to 319,494.20, 479,241.30 and 97,878.20

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Solution

The fourth proportional to 319,494.20, 479,241.30 and 97,878.20 is: 146,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,494.20 : 479,241.30 = 97,878.20 : x
  2. Step 2: Convert to fraction form
    319,494.20/479,241.30 = 97,878.20/x
  3. Step 3: Cross multiply
    319,494.20x = 479,241.30 × 97,878.20
  4. Step 4: Simplify right side
    319,494.20x = 46,907,275,809.66
  5. Step 5: Solve for x
    x = 46,907,275,809.66/319,494.20
  6. Step 6: Final answer
    x = 146,817.30

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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.