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Finding the Fourth Proportional to 425,156.84, 636,771.16 and 329,621.39

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Solution

The fourth proportional to 425,156.84, 636,771.16 and 329,621.39 is: 493,684.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,156.84 : 636,771.16 = 329,621.39 : x
  2. Step 2: Convert to fraction form
    425,156.84/636,771.16 = 329,621.39/x
  3. Step 3: Cross multiply
    425,156.84x = 636,771.16 × 329,621.39
  4. Step 4: Simplify right side
    425,156.84x = 209,893,395,638.99
  5. Step 5: Solve for x
    x = 209,893,395,638.99/425,156.84
  6. Step 6: Final answer
    x = 493,684.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.