Home / 385,042.26-531,145.02-223,879.50

Finding the Fourth Proportional to 385,042.26, 531,145.02 and 223,879.50

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Solution

The fourth proportional to 385,042.26, 531,145.02 and 223,879.50 is: 308,829.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,042.26 : 531,145.02 = 223,879.50 : x
  2. Step 2: Convert to fraction form
    385,042.26/531,145.02 = 223,879.50/x
  3. Step 3: Cross multiply
    385,042.26x = 531,145.02 × 223,879.50
  4. Step 4: Simplify right side
    385,042.26x = 118,912,481,505.09
  5. Step 5: Solve for x
    x = 118,912,481,505.09/385,042.26
  6. Step 6: Final answer
    x = 308,829.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.