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Finding the Fourth Proportional to 318,102.33, 439,083.36 and 203,689.02

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Solution

The fourth proportional to 318,102.33, 439,083.36 and 203,689.02 is: 281,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,102.33 : 439,083.36 = 203,689.02 : x
  2. Step 2: Convert to fraction form
    318,102.33/439,083.36 = 203,689.02/x
  3. Step 3: Cross multiply
    318,102.33x = 439,083.36 × 203,689.02
  4. Step 4: Simplify right side
    318,102.33x = 89,436,459,296.71
  5. Step 5: Solve for x
    x = 89,436,459,296.71/318,102.33
  6. Step 6: Final answer
    x = 281,156.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.