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Finding the Fourth Proportional to 351,492.40, 527,238.60 and 85,252.49

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Solution

The fourth proportional to 351,492.40, 527,238.60 and 85,252.49 is: 127,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,492.40 : 527,238.60 = 85,252.49 : x
  2. Step 2: Convert to fraction form
    351,492.40/527,238.60 = 85,252.49/x
  3. Step 3: Cross multiply
    351,492.40x = 527,238.60 × 85,252.49
  4. Step 4: Simplify right side
    351,492.40x = 44,948,403,474.11
  5. Step 5: Solve for x
    x = 44,948,403,474.11/351,492.40
  6. Step 6: Final answer
    x = 127,878.74

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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.