Home / 317,816.51-438,403.59-190,418.31

Finding the Fourth Proportional to 317,816.51, 438,403.59 and 190,418.31

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Solution

The fourth proportional to 317,816.51, 438,403.59 and 190,418.31 is: 262,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,816.51 : 438,403.59 = 190,418.31 : x
  2. Step 2: Convert to fraction form
    317,816.51/438,403.59 = 190,418.31/x
  3. Step 3: Cross multiply
    317,816.51x = 438,403.59 × 190,418.31
  4. Step 4: Simplify right side
    317,816.51x = 83,480,070,705.73
  5. Step 5: Solve for x
    x = 83,480,070,705.73/317,816.51
  6. Step 6: Final answer
    x = 262,667.51

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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.