Home / 401,020.32-553,371.24-231,221.64

Finding the Fourth Proportional to 401,020.32, 553,371.24 and 231,221.64

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Solution

The fourth proportional to 401,020.32, 553,371.24 and 231,221.64 is: 319,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,020.32 : 553,371.24 = 231,221.64 : x
  2. Step 2: Convert to fraction form
    401,020.32/553,371.24 = 231,221.64/x
  3. Step 3: Cross multiply
    401,020.32x = 553,371.24 × 231,221.64
  4. Step 4: Simplify right side
    401,020.32x = 127,951,405,641.63
  5. Step 5: Solve for x
    x = 127,951,405,641.63/401,020.32
  6. Step 6: Final answer
    x = 319,064.64

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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.