Home / 319,786.79-479,930.74-223,095.20

Finding the Fourth Proportional to 319,786.79, 479,930.74 and 223,095.20

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Solution

The fourth proportional to 319,786.79, 479,930.74 and 223,095.20 is: 334,817.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,786.79 : 479,930.74 = 223,095.20 : x
  2. Step 2: Convert to fraction form
    319,786.79/479,930.74 = 223,095.20/x
  3. Step 3: Cross multiply
    319,786.79x = 479,930.74 × 223,095.20
  4. Step 4: Simplify right side
    319,786.79x = 107,070,241,469.06
  5. Step 5: Solve for x
    x = 107,070,241,469.06/319,786.79
  6. Step 6: Final answer
    x = 334,817.59

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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.