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Finding the Fourth Proportional to 447,586.16, 617,676.78 and 243,642.94

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Solution

The fourth proportional to 447,586.16, 617,676.78 and 243,642.94 is: 336,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,586.16 : 617,676.78 = 243,642.94 : x
  2. Step 2: Convert to fraction form
    447,586.16/617,676.78 = 243,642.94/x
  3. Step 3: Cross multiply
    447,586.16x = 617,676.78 × 243,642.94
  4. Step 4: Simplify right side
    447,586.16x = 150,492,586,039.83
  5. Step 5: Solve for x
    x = 150,492,586,039.83/447,586.16
  6. Step 6: Final answer
    x = 336,231.55

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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.