Home / 420,261.83-579,958.62-238,973.76

Finding the Fourth Proportional to 420,261.83, 579,958.62 and 238,973.76

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Solution

The fourth proportional to 420,261.83, 579,958.62 and 238,973.76 is: 329,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,261.83 : 579,958.62 = 238,973.76 : x
  2. Step 2: Convert to fraction form
    420,261.83/579,958.62 = 238,973.76/x
  3. Step 3: Cross multiply
    420,261.83x = 579,958.62 × 238,973.76
  4. Step 4: Simplify right side
    420,261.83x = 138,594,891,169.66
  5. Step 5: Solve for x
    x = 138,594,891,169.66/420,261.83
  6. Step 6: Final answer
    x = 329,782.25

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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.