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Finding the Fourth Proportional to 251,522.40, 377,272.80 and 85,310.40

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Solution

The fourth proportional to 251,522.40, 377,272.80 and 85,310.40 is: 127,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,522.40 : 377,272.80 = 85,310.40 : x
  2. Step 2: Convert to fraction form
    251,522.40/377,272.80 = 85,310.40/x
  3. Step 3: Cross multiply
    251,522.40x = 377,272.80 × 85,310.40
  4. Step 4: Simplify right side
    251,522.40x = 32,185,293,477.12
  5. Step 5: Solve for x
    x = 32,185,293,477.12/251,522.40
  6. Step 6: Final answer
    x = 127,961.94

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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.