Home / 420,371.28-580,126.35-229,395.15

Finding the Fourth Proportional to 420,371.28, 580,126.35 and 229,395.15

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Solution

The fourth proportional to 420,371.28, 580,126.35 and 229,395.15 is: 316,572.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,371.28 : 580,126.35 = 229,395.15 : x
  2. Step 2: Convert to fraction form
    420,371.28/580,126.35 = 229,395.15/x
  3. Step 3: Cross multiply
    420,371.28x = 580,126.35 × 229,395.15
  4. Step 4: Simplify right side
    420,371.28x = 133,078,171,077.20
  5. Step 5: Solve for x
    x = 133,078,171,077.20/420,371.28
  6. Step 6: Final answer
    x = 316,572.94

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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.