Home / 420,127.95-579,676.87-238,825.55

Finding the Fourth Proportional to 420,127.95, 579,676.87 and 238,825.55

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Solution

The fourth proportional to 420,127.95, 579,676.87 and 238,825.55 is: 329,522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,127.95 : 579,676.87 = 238,825.55 : x
  2. Step 2: Convert to fraction form
    420,127.95/579,676.87 = 238,825.55/x
  3. Step 3: Cross multiply
    420,127.95x = 579,676.87 × 238,825.55
  4. Step 4: Simplify right side
    420,127.95x = 138,441,647,300.03
  5. Step 5: Solve for x
    x = 138,441,647,300.03/420,127.95
  6. Step 6: Final answer
    x = 329,522.58

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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.