Home / 317,780.25-438,430.01-179,940.39

Finding the Fourth Proportional to 317,780.25, 438,430.01 and 179,940.39

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Solution

The fourth proportional to 317,780.25, 438,430.01 and 179,940.39 is: 248,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,780.25 : 438,430.01 = 179,940.39 : x
  2. Step 2: Convert to fraction form
    317,780.25/438,430.01 = 179,940.39/x
  3. Step 3: Cross multiply
    317,780.25x = 438,430.01 × 179,940.39
  4. Step 4: Simplify right side
    317,780.25x = 78,891,266,987.10
  5. Step 5: Solve for x
    x = 78,891,266,987.10/317,780.25
  6. Step 6: Final answer
    x = 248,257.30

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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.