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Finding the Fourth Proportional to 251,137.80, 376,706.70 and 162,491.40

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Solution

The fourth proportional to 251,137.80, 376,706.70 and 162,491.40 is: 243,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,137.80 : 376,706.70 = 162,491.40 : x
  2. Step 2: Convert to fraction form
    251,137.80/376,706.70 = 162,491.40/x
  3. Step 3: Cross multiply
    251,137.80x = 376,706.70 × 162,491.40
  4. Step 4: Simplify right side
    251,137.80x = 61,211,599,072.38
  5. Step 5: Solve for x
    x = 61,211,599,072.38/251,137.80
  6. Step 6: Final answer
    x = 243,737.10

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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.