Home / 317,935.20-438,788.72-190,680.80

Finding the Fourth Proportional to 317,935.20, 438,788.72 and 190,680.80

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Solution

The fourth proportional to 317,935.20, 438,788.72 and 190,680.80 is: 263,162.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,935.20 : 438,788.72 = 190,680.80 : x
  2. Step 2: Convert to fraction form
    317,935.20/438,788.72 = 190,680.80/x
  3. Step 3: Cross multiply
    317,935.20x = 438,788.72 × 190,680.80
  4. Step 4: Simplify right side
    317,935.20x = 83,668,584,160.58
  5. Step 5: Solve for x
    x = 83,668,584,160.58/317,935.20
  6. Step 6: Final answer
    x = 263,162.38

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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.