Home / 420,246.89-579,938.02-238,958.87

Finding the Fourth Proportional to 420,246.89, 579,938.02 and 238,958.87

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Solution

The fourth proportional to 420,246.89, 579,938.02 and 238,958.87 is: 329,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,246.89 : 579,938.02 = 238,958.87 : x
  2. Step 2: Convert to fraction form
    420,246.89/579,938.02 = 238,958.87/x
  3. Step 3: Cross multiply
    420,246.89x = 579,938.02 × 238,958.87
  4. Step 4: Simplify right side
    420,246.89x = 138,581,330,559.68
  5. Step 5: Solve for x
    x = 138,581,330,559.68/420,246.89
  6. Step 6: Final answer
    x = 329,761.70

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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.