Home / 319,621.20-479,099.70-130,000.20

Finding the Fourth Proportional to 319,621.20, 479,099.70 and 130,000.20

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Solution

The fourth proportional to 319,621.20, 479,099.70 and 130,000.20 is: 194,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,621.20 : 479,099.70 = 130,000.20 : x
  2. Step 2: Convert to fraction form
    319,621.20/479,099.70 = 130,000.20/x
  3. Step 3: Cross multiply
    319,621.20x = 479,099.70 × 130,000.20
  4. Step 4: Simplify right side
    319,621.20x = 62,283,056,819.94
  5. Step 5: Solve for x
    x = 62,283,056,819.94/319,621.20
  6. Step 6: Final answer
    x = 194,865.22

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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.