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Finding the Fourth Proportional to 420,859.44, 580,802.94 and 229,880.88

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Solution

The fourth proportional to 420,859.44, 580,802.94 and 229,880.88 is: 317,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,859.44 : 580,802.94 = 229,880.88 : x
  2. Step 2: Convert to fraction form
    420,859.44/580,802.94 = 229,880.88/x
  3. Step 3: Cross multiply
    420,859.44x = 580,802.94 × 229,880.88
  4. Step 4: Simplify right side
    420,859.44x = 133,515,490,953.79
  5. Step 5: Solve for x
    x = 133,515,490,953.79/420,859.44
  6. Step 6: Final answer
    x = 317,244.85

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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.