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Finding the Fourth Proportional to 323,432.10, 485,148.15 and 308,916.90

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Solution

The fourth proportional to 323,432.10, 485,148.15 and 308,916.90 is: 463,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,432.10 : 485,148.15 = 308,916.90 : x
  2. Step 2: Convert to fraction form
    323,432.10/485,148.15 = 308,916.90/x
  3. Step 3: Cross multiply
    323,432.10x = 485,148.15 × 308,916.90
  4. Step 4: Simplify right side
    323,432.10x = 149,870,462,538.74
  5. Step 5: Solve for x
    x = 149,870,462,538.74/323,432.10
  6. Step 6: Final answer
    x = 463,375.35

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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.