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Finding the Fourth Proportional to 375,770.39, 518,564.28 and 203,688.57

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Solution

The fourth proportional to 375,770.39, 518,564.28 and 203,688.57 is: 281,090.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,770.39 : 518,564.28 = 203,688.57 : x
  2. Step 2: Convert to fraction form
    375,770.39/518,564.28 = 203,688.57/x
  3. Step 3: Cross multiply
    375,770.39x = 518,564.28 × 203,688.57
  4. Step 4: Simplify right side
    375,770.39x = 105,625,618,208.98
  5. Step 5: Solve for x
    x = 105,625,618,208.98/375,770.39
  6. Step 6: Final answer
    x = 281,090.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.