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Finding the Fourth Proportional to 251,170.80, 376,756.20 and 217,345.20

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Solution

The fourth proportional to 251,170.80, 376,756.20 and 217,345.20 is: 326,017.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,170.80 : 376,756.20 = 217,345.20 : x
  2. Step 2: Convert to fraction form
    251,170.80/376,756.20 = 217,345.20/x
  3. Step 3: Cross multiply
    251,170.80x = 376,756.20 × 217,345.20
  4. Step 4: Simplify right side
    251,170.80x = 81,886,151,640.24
  5. Step 5: Solve for x
    x = 81,886,151,640.24/251,170.80
  6. Step 6: Final answer
    x = 326,017.80

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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.