Home / 400,115.79-552,698.96-320,115.33

Finding the Fourth Proportional to 400,115.79, 552,698.96 and 320,115.33

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Solution

The fourth proportional to 400,115.79, 552,698.96 and 320,115.33 is: 442,190.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,115.79 : 552,698.96 = 320,115.33 : x
  2. Step 2: Convert to fraction form
    400,115.79/552,698.96 = 320,115.33/x
  3. Step 3: Cross multiply
    400,115.79x = 552,698.96 × 320,115.33
  4. Step 4: Simplify right side
    400,115.79x = 176,927,409,971.06
  5. Step 5: Solve for x
    x = 176,927,409,971.06/400,115.79
  6. Step 6: Final answer
    x = 442,190.52

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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.