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Finding the Fourth Proportional to 207,396.45, 311,094.88 and 57,636.77

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Solution

The fourth proportional to 207,396.45, 311,094.88 and 57,636.77 is: 86,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,396.45 : 311,094.88 = 57,636.77 : x
  2. Step 2: Convert to fraction form
    207,396.45/311,094.88 = 57,636.77/x
  3. Step 3: Cross multiply
    207,396.45x = 311,094.88 × 57,636.77
  4. Step 4: Simplify right side
    207,396.45x = 17,930,502,347.17
  5. Step 5: Solve for x
    x = 17,930,502,347.17/207,396.45
  6. Step 6: Final answer
    x = 86,455.20

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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.