Home / 420,267.12-579,965.82-238,979.06

Finding the Fourth Proportional to 420,267.12, 579,965.82 and 238,979.06

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Solution

The fourth proportional to 420,267.12, 579,965.82 and 238,979.06 is: 329,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,267.12 : 579,965.82 = 238,979.06 : x
  2. Step 2: Convert to fraction form
    420,267.12/579,965.82 = 238,979.06/x
  3. Step 3: Cross multiply
    420,267.12x = 579,965.82 × 238,979.06
  4. Step 4: Simplify right side
    420,267.12x = 138,599,683,595.90
  5. Step 5: Solve for x
    x = 138,599,683,595.90/420,267.12
  6. Step 6: Final answer
    x = 329,789.50

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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.