Home / 420,858.32-580,787.48-229,871.66

Finding the Fourth Proportional to 420,858.32, 580,787.48 and 229,871.66

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Solution

The fourth proportional to 420,858.32, 580,787.48 and 229,871.66 is: 317,224.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,858.32 : 580,787.48 = 229,871.66 : x
  2. Step 2: Convert to fraction form
    420,858.32/580,787.48 = 229,871.66/x
  3. Step 3: Cross multiply
    420,858.32x = 580,787.48 × 229,871.66
  4. Step 4: Simplify right side
    420,858.32x = 133,506,579,805.56
  5. Step 5: Solve for x
    x = 133,506,579,805.56/420,858.32
  6. Step 6: Final answer
    x = 317,224.53

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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.