Home / 319,815.90-479,722.91-130,231.62

Finding the Fourth Proportional to 319,815.90, 479,722.91 and 130,231.62

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Solution

The fourth proportional to 319,815.90, 479,722.91 and 130,231.62 is: 195,347.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,815.90 : 479,722.91 = 130,231.62 : x
  2. Step 2: Convert to fraction form
    319,815.90/479,722.91 = 130,231.62/x
  3. Step 3: Cross multiply
    319,815.90x = 479,722.91 × 130,231.62
  4. Step 4: Simplify right side
    319,815.90x = 62,475,091,069.26
  5. Step 5: Solve for x
    x = 62,475,091,069.26/319,815.90
  6. Step 6: Final answer
    x = 195,347.05

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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.