Home / 420,236.21-579,923.29-238,948.14

Finding the Fourth Proportional to 420,236.21, 579,923.29 and 238,948.14

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Solution

The fourth proportional to 420,236.21, 579,923.29 and 238,948.14 is: 329,746.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,236.21 : 579,923.29 = 238,948.14 : x
  2. Step 2: Convert to fraction form
    420,236.21/579,923.29 = 238,948.14/x
  3. Step 3: Cross multiply
    420,236.21x = 579,923.29 × 238,948.14
  4. Step 4: Simplify right side
    420,236.21x = 138,571,593,961.58
  5. Step 5: Solve for x
    x = 138,571,593,961.58/420,236.21
  6. Step 6: Final answer
    x = 329,746.91

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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.