Home / 420,917.42-580,878.80-229,943.12

Finding the Fourth Proportional to 420,917.42, 580,878.80 and 229,943.12

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Solution

The fourth proportional to 420,917.42, 580,878.80 and 229,943.12 is: 317,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,917.42 : 580,878.80 = 229,943.12 : x
  2. Step 2: Convert to fraction form
    420,917.42/580,878.80 = 229,943.12/x
  3. Step 3: Cross multiply
    420,917.42x = 580,878.80 × 229,943.12
  4. Step 4: Simplify right side
    420,917.42x = 133,569,080,422.03
  5. Step 5: Solve for x
    x = 133,569,080,422.03/420,917.42
  6. Step 6: Final answer
    x = 317,328.47

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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.