Home / 420,893.28-580,825.44-229,901.76

Finding the Fourth Proportional to 420,893.28, 580,825.44 and 229,901.76

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Solution

The fourth proportional to 420,893.28, 580,825.44 and 229,901.76 is: 317,260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,893.28 : 580,825.44 = 229,901.76 : x
  2. Step 2: Convert to fraction form
    420,893.28/580,825.44 = 229,901.76/x
  3. Step 3: Cross multiply
    420,893.28x = 580,825.44 × 229,901.76
  4. Step 4: Simplify right side
    420,893.28x = 133,532,790,908.77
  5. Step 5: Solve for x
    x = 133,532,790,908.77/420,893.28
  6. Step 6: Final answer
    x = 317,260.45

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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.