Home / 420,189.48-579,838.16-238,876.25

Finding the Fourth Proportional to 420,189.48, 579,838.16 and 238,876.25

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Solution

The fourth proportional to 420,189.48, 579,838.16 and 238,876.25 is: 329,635.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,189.48 : 579,838.16 = 238,876.25 : x
  2. Step 2: Convert to fraction form
    420,189.48/579,838.16 = 238,876.25/x
  3. Step 3: Cross multiply
    420,189.48x = 579,838.16 × 238,876.25
  4. Step 4: Simplify right side
    420,189.48x = 138,509,562,965.70
  5. Step 5: Solve for x
    x = 138,509,562,965.70/420,189.48
  6. Step 6: Final answer
    x = 329,635.96

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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.