Home / 420,911.87-580,836.69-229,888.35

Finding the Fourth Proportional to 420,911.87, 580,836.69 and 229,888.35

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Solution

The fourth proportional to 420,911.87, 580,836.69 and 229,888.35 is: 317,234.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,911.87 : 580,836.69 = 229,888.35 : x
  2. Step 2: Convert to fraction form
    420,911.87/580,836.69 = 229,888.35/x
  3. Step 3: Cross multiply
    420,911.87x = 580,836.69 × 229,888.35
  4. Step 4: Simplify right side
    420,911.87x = 133,527,588,283.56
  5. Step 5: Solve for x
    x = 133,527,588,283.56/420,911.87
  6. Step 6: Final answer
    x = 317,234.08

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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.