Home / 317,923.20-438,772.16-190,668.80

Finding the Fourth Proportional to 317,923.20, 438,772.16 and 190,668.80

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Solution

The fourth proportional to 317,923.20, 438,772.16 and 190,668.80 is: 263,145.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,923.20 : 438,772.16 = 190,668.80 : x
  2. Step 2: Convert to fraction form
    317,923.20/438,772.16 = 190,668.80/x
  3. Step 3: Cross multiply
    317,923.20x = 438,772.16 × 190,668.80
  4. Step 4: Simplify right side
    317,923.20x = 83,660,161,220.61
  5. Step 5: Solve for x
    x = 83,660,161,220.61/317,923.20
  6. Step 6: Final answer
    x = 263,145.82

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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.