Home / 420,213.84-579,901.32-238,903.44

Finding the Fourth Proportional to 420,213.84, 579,901.32 and 238,903.44

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Solution

The fourth proportional to 420,213.84, 579,901.32 and 238,903.44 is: 329,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,213.84 : 579,901.32 = 238,903.44 : x
  2. Step 2: Convert to fraction form
    420,213.84/579,901.32 = 238,903.44/x
  3. Step 3: Cross multiply
    420,213.84x = 579,901.32 × 238,903.44
  4. Step 4: Simplify right side
    420,213.84x = 138,540,420,208.54
  5. Step 5: Solve for x
    x = 138,540,420,208.54/420,213.84
  6. Step 6: Final answer
    x = 329,690.28

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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.