Home / 420,878.92-580,825.20-229,895.32

Finding the Fourth Proportional to 420,878.92, 580,825.20 and 229,895.32

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Solution

The fourth proportional to 420,878.92, 580,825.20 and 229,895.32 is: 317,262.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,878.92 : 580,825.20 = 229,895.32 : x
  2. Step 2: Convert to fraction form
    420,878.92/580,825.20 = 229,895.32/x
  3. Step 3: Cross multiply
    420,878.92x = 580,825.20 × 229,895.32
  4. Step 4: Simplify right side
    420,878.92x = 133,528,995,218.06
  5. Step 5: Solve for x
    x = 133,528,995,218.06/420,878.92
  6. Step 6: Final answer
    x = 317,262.25

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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.