Home / 420,827.84-580,720.56-229,803.92

Finding the Fourth Proportional to 420,827.84, 580,720.56 and 229,803.92

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Solution

The fourth proportional to 420,827.84, 580,720.56 and 229,803.92 is: 317,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,827.84 : 580,720.56 = 229,803.92 : x
  2. Step 2: Convert to fraction form
    420,827.84/580,720.56 = 229,803.92/x
  3. Step 3: Cross multiply
    420,827.84x = 580,720.56 × 229,803.92
  4. Step 4: Simplify right side
    420,827.84x = 133,451,861,112.60
  5. Step 5: Solve for x
    x = 133,451,861,112.60/420,827.84
  6. Step 6: Final answer
    x = 317,117.47

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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.