Home / 309,608.34-427,263.02-171,789.75

Finding the Fourth Proportional to 309,608.34, 427,263.02 and 171,789.75

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Solution

The fourth proportional to 309,608.34, 427,263.02 and 171,789.75 is: 237,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,608.34 : 427,263.02 = 171,789.75 : x
  2. Step 2: Convert to fraction form
    309,608.34/427,263.02 = 171,789.75/x
  3. Step 3: Cross multiply
    309,608.34x = 427,263.02 × 171,789.75
  4. Step 4: Simplify right side
    309,608.34x = 73,399,404,394.78
  5. Step 5: Solve for x
    x = 73,399,404,394.78/309,608.34
  6. Step 6: Final answer
    x = 237,071.80

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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.