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Finding the Fourth Proportional to 276,811.10, 415,216.65 and 252,316.70

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Solution

The fourth proportional to 276,811.10, 415,216.65 and 252,316.70 is: 378,475.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,811.10 : 415,216.65 = 252,316.70 : x
  2. Step 2: Convert to fraction form
    276,811.10/415,216.65 = 252,316.70/x
  3. Step 3: Cross multiply
    276,811.10x = 415,216.65 × 252,316.70
  4. Step 4: Simplify right side
    276,811.10x = 104,766,094,913.06
  5. Step 5: Solve for x
    x = 104,766,094,913.06/276,811.10
  6. Step 6: Final answer
    x = 378,475.05

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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.