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Finding the Fourth Proportional to 375,128.60, 517,677.48 and 205,362.72

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Solution

The fourth proportional to 375,128.60, 517,677.48 and 205,362.72 is: 283,400.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,128.60 : 517,677.48 = 205,362.72 : x
  2. Step 2: Convert to fraction form
    375,128.60/517,677.48 = 205,362.72/x
  3. Step 3: Cross multiply
    375,128.60x = 517,677.48 × 205,362.72
  4. Step 4: Simplify right side
    375,128.60x = 106,311,655,375.55
  5. Step 5: Solve for x
    x = 106,311,655,375.55/375,128.60
  6. Step 6: Final answer
    x = 283,400.56

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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.