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Finding the Fourth Proportional to 251,998.72, 378,071.90 and 74,510.35

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Solution

The fourth proportional to 251,998.72, 378,071.90 and 74,510.35 is: 111,787.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,998.72 : 378,071.90 = 74,510.35 : x
  2. Step 2: Convert to fraction form
    251,998.72/378,071.90 = 74,510.35/x
  3. Step 3: Cross multiply
    251,998.72x = 378,071.90 × 74,510.35
  4. Step 4: Simplify right side
    251,998.72x = 28,170,269,780.44
  5. Step 5: Solve for x
    x = 28,170,269,780.44/251,998.72
  6. Step 6: Final answer
    x = 111,787.35

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1.5x scale

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.