Home / 320,918.48-442,905.96-186,782.48

Finding the Fourth Proportional to 320,918.48, 442,905.96 and 186,782.48

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Solution

The fourth proportional to 320,918.48, 442,905.96 and 186,782.48 is: 257,782.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,918.48 : 442,905.96 = 186,782.48 : x
  2. Step 2: Convert to fraction form
    320,918.48/442,905.96 = 186,782.48/x
  3. Step 3: Cross multiply
    320,918.48x = 442,905.96 × 186,782.48
  4. Step 4: Simplify right side
    320,918.48x = 82,727,073,615.58
  5. Step 5: Solve for x
    x = 82,727,073,615.58/320,918.48
  6. Step 6: Final answer
    x = 257,782.21

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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.