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Finding the Fourth Proportional to 355,278.10, 532,917.15 and 256,134.10

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Solution

The fourth proportional to 355,278.10, 532,917.15 and 256,134.10 is: 384,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,278.10 : 532,917.15 = 256,134.10 : x
  2. Step 2: Convert to fraction form
    355,278.10/532,917.15 = 256,134.10/x
  3. Step 3: Cross multiply
    355,278.10x = 532,917.15 × 256,134.10
  4. Step 4: Simplify right side
    355,278.10x = 136,498,254,589.82
  5. Step 5: Solve for x
    x = 136,498,254,589.82/355,278.10
  6. Step 6: Final answer
    x = 384,201.15

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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.