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Finding the Fourth Proportional to 358,028.76, 536,338.44 and 257,951.64

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Solution

The fourth proportional to 358,028.76, 536,338.44 and 257,951.64 is: 386,419.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,028.76 : 536,338.44 = 257,951.64 : x
  2. Step 2: Convert to fraction form
    358,028.76/536,338.44 = 257,951.64/x
  3. Step 3: Cross multiply
    358,028.76x = 536,338.44 × 257,951.64
  4. Step 4: Simplify right side
    358,028.76x = 138,349,380,193.04
  5. Step 5: Solve for x
    x = 138,349,380,193.04/358,028.76
  6. Step 6: Final answer
    x = 386,419.74

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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.