Home / 420,265.95-579,964.25-238,977.89

Finding the Fourth Proportional to 420,265.95, 579,964.25 and 238,977.89

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Solution

The fourth proportional to 420,265.95, 579,964.25 and 238,977.89 is: 329,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,265.95 : 579,964.25 = 238,977.89 : x
  2. Step 2: Convert to fraction form
    420,265.95/579,964.25 = 238,977.89/x
  3. Step 3: Cross multiply
    420,265.95x = 579,964.25 × 238,977.89
  4. Step 4: Simplify right side
    420,265.95x = 138,598,632,740.43
  5. Step 5: Solve for x
    x = 138,598,632,740.43/420,265.95
  6. Step 6: Final answer
    x = 329,787.92

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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.