Home / 290,327.82-400,642.07-163,008.78

Finding the Fourth Proportional to 290,327.82, 400,642.07 and 163,008.78

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Solution

The fourth proportional to 290,327.82, 400,642.07 and 163,008.78 is: 224,946.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,327.82 : 400,642.07 = 163,008.78 : x
  2. Step 2: Convert to fraction form
    290,327.82/400,642.07 = 163,008.78/x
  3. Step 3: Cross multiply
    290,327.82x = 400,642.07 × 163,008.78
  4. Step 4: Simplify right side
    290,327.82x = 65,308,174,232.33
  5. Step 5: Solve for x
    x = 65,308,174,232.33/290,327.82
  6. Step 6: Final answer
    x = 224,946.32

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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.