Home / 420,028.50-579,653.92-238,748.08

Finding the Fourth Proportional to 420,028.50, 579,653.92 and 238,748.08

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Solution

The fourth proportional to 420,028.50, 579,653.92 and 238,748.08 is: 329,480.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,028.50 : 579,653.92 = 238,748.08 : x
  2. Step 2: Convert to fraction form
    420,028.50/579,653.92 = 238,748.08/x
  3. Step 3: Cross multiply
    420,028.50x = 579,653.92 × 238,748.08
  4. Step 4: Simplify right side
    420,028.50x = 138,391,260,464.47
  5. Step 5: Solve for x
    x = 138,391,260,464.47/420,028.50
  6. Step 6: Final answer
    x = 329,480.64

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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.