Home / 420,918.30-580,845.45-229,894.77

Finding the Fourth Proportional to 420,918.30, 580,845.45 and 229,894.77

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Solution

The fourth proportional to 420,918.30, 580,845.45 and 229,894.77 is: 317,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,918.30 : 580,845.45 = 229,894.77 : x
  2. Step 2: Convert to fraction form
    420,918.30/580,845.45 = 229,894.77/x
  3. Step 3: Cross multiply
    420,918.30x = 580,845.45 × 229,894.77
  4. Step 4: Simplify right side
    420,918.30x = 133,533,331,133.30
  5. Step 5: Solve for x
    x = 133,533,331,133.30/420,918.30
  6. Step 6: Final answer
    x = 317,242.87

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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.