Home / 420,261.46-579,958.10-238,973.38

Finding the Fourth Proportional to 420,261.46, 579,958.10 and 238,973.38

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Solution

The fourth proportional to 420,261.46, 579,958.10 and 238,973.38 is: 329,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,261.46 : 579,958.10 = 238,973.38 : x
  2. Step 2: Convert to fraction form
    420,261.46/579,958.10 = 238,973.38/x
  3. Step 3: Cross multiply
    420,261.46x = 579,958.10 × 238,973.38
  4. Step 4: Simplify right side
    420,261.46x = 138,594,544,770.62
  5. Step 5: Solve for x
    x = 138,594,544,770.62/420,261.46
  6. Step 6: Final answer
    x = 329,781.72

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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.