Home / 420,215.84-579,904.08-238,905.44

Finding the Fourth Proportional to 420,215.84, 579,904.08 and 238,905.44

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Solution

The fourth proportional to 420,215.84, 579,904.08 and 238,905.44 is: 329,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,215.84 : 579,904.08 = 238,905.44 : x
  2. Step 2: Convert to fraction form
    420,215.84/579,904.08 = 238,905.44/x
  3. Step 3: Cross multiply
    420,215.84x = 579,904.08 × 238,905.44
  4. Step 4: Simplify right side
    420,215.84x = 138,542,239,390.20
  5. Step 5: Solve for x
    x = 138,542,239,390.20/420,215.84
  6. Step 6: Final answer
    x = 329,693.04

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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.