Home / 319,619.60-479,429.40-97,974.80

Finding the Fourth Proportional to 319,619.60, 479,429.40 and 97,974.80

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Solution

The fourth proportional to 319,619.60, 479,429.40 and 97,974.80 is: 146,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,619.60 : 479,429.40 = 97,974.80 : x
  2. Step 2: Convert to fraction form
    319,619.60/479,429.40 = 97,974.80/x
  3. Step 3: Cross multiply
    319,619.60x = 479,429.40 × 97,974.80
  4. Step 4: Simplify right side
    319,619.60x = 46,971,999,579.12
  5. Step 5: Solve for x
    x = 46,971,999,579.12/319,619.60
  6. Step 6: Final answer
    x = 146,962.20

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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.