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Finding the Fourth Proportional to 617,126.80, 925,508.76 and 262,138

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Solution

The fourth proportional to 617,126.80, 925,508.76 and 262,138 is: 393,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,126.80 : 925,508.76 = 262,138 : x
  2. Step 2: Convert to fraction form
    617,126.80/925,508.76 = 262,138/x
  3. Step 3: Cross multiply
    617,126.80x = 925,508.76 × 262,138
  4. Step 4: Simplify right side
    617,126.80x = 242,611,015,328.88
  5. Step 5: Solve for x
    x = 242,611,015,328.88/617,126.80
  6. Step 6: Final answer
    x = 393,129.93

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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.