Home / 293,580.20-405,133.76-172,729.28

Finding the Fourth Proportional to 293,580.20, 405,133.76 and 172,729.28

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Solution

The fourth proportional to 293,580.20, 405,133.76 and 172,729.28 is: 238,362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,580.20 : 405,133.76 = 172,729.28 : x
  2. Step 2: Convert to fraction form
    293,580.20/405,133.76 = 172,729.28/x
  3. Step 3: Cross multiply
    293,580.20x = 405,133.76 × 172,729.28
  4. Step 4: Simplify right side
    293,580.20x = 69,978,462,668.49
  5. Step 5: Solve for x
    x = 69,978,462,668.49/293,580.20
  6. Step 6: Final answer
    x = 238,362.34

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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.