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Finding the Fourth Proportional to 401,915.66, 603,165.08 and 323,970.98

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Solution

The fourth proportional to 401,915.66, 603,165.08 and 323,970.98 is: 486,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,915.66 : 603,165.08 = 323,970.98 : x
  2. Step 2: Convert to fraction form
    401,915.66/603,165.08 = 323,970.98/x
  3. Step 3: Cross multiply
    401,915.66x = 603,165.08 × 323,970.98
  4. Step 4: Simplify right side
    401,915.66x = 195,407,979,863.48
  5. Step 5: Solve for x
    x = 195,407,979,863.48/401,915.66
  6. Step 6: Final answer
    x = 486,191.51

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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.