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Finding the Fourth Proportional to 323,915.99, 485,903.14 and 87,253.43

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Solution

The fourth proportional to 323,915.99, 485,903.14 and 87,253.43 is: 130,888.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,915.99 : 485,903.14 = 87,253.43 : x
  2. Step 2: Convert to fraction form
    323,915.99/485,903.14 = 87,253.43/x
  3. Step 3: Cross multiply
    323,915.99x = 485,903.14 × 87,253.43
  4. Step 4: Simplify right side
    323,915.99x = 42,396,715,612.77
  5. Step 5: Solve for x
    x = 42,396,715,612.77/323,915.99
  6. Step 6: Final answer
    x = 130,888.00

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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.