Home / 420,261.55-579,958.19-238,973.49

Finding the Fourth Proportional to 420,261.55, 579,958.19 and 238,973.49

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Solution

The fourth proportional to 420,261.55, 579,958.19 and 238,973.49 is: 329,781.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,261.55 : 579,958.19 = 238,973.49 : x
  2. Step 2: Convert to fraction form
    420,261.55/579,958.19 = 238,973.49/x
  3. Step 3: Cross multiply
    420,261.55x = 579,958.19 × 238,973.49
  4. Step 4: Simplify right side
    420,261.55x = 138,594,632,718.38
  5. Step 5: Solve for x
    x = 138,594,632,718.38/420,261.55
  6. Step 6: Final answer
    x = 329,781.85

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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.