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Finding the Fourth Proportional to 323,424.10, 485,136.15 and 308,908.90

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Solution

The fourth proportional to 323,424.10, 485,136.15 and 308,908.90 is: 463,363.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,424.10 : 485,136.15 = 308,908.90 : x
  2. Step 2: Convert to fraction form
    323,424.10/485,136.15 = 308,908.90/x
  3. Step 3: Cross multiply
    323,424.10x = 485,136.15 × 308,908.90
  4. Step 4: Simplify right side
    323,424.10x = 149,862,874,446.74
  5. Step 5: Solve for x
    x = 149,862,874,446.74/323,424.10
  6. Step 6: Final answer
    x = 463,363.35

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1.5x scale

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.