Home / 420,266.07-579,954.74-238,997.79

Finding the Fourth Proportional to 420,266.07, 579,954.74 and 238,997.79

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Solution

The fourth proportional to 420,266.07, 579,954.74 and 238,997.79 is: 329,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,266.07 : 579,954.74 = 238,997.79 : x
  2. Step 2: Convert to fraction form
    420,266.07/579,954.74 = 238,997.79/x
  3. Step 3: Cross multiply
    420,266.07x = 579,954.74 × 238,997.79
  4. Step 4: Simplify right side
    420,266.07x = 138,607,899,965.04
  5. Step 5: Solve for x
    x = 138,607,899,965.04/420,266.07
  6. Step 6: Final answer
    x = 329,809.87

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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.