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Finding the Fourth Proportional to 516,688.20, 775,053.90 and 276,701.40

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Solution

The fourth proportional to 516,688.20, 775,053.90 and 276,701.40 is: 415,063.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,688.20 : 775,053.90 = 276,701.40 : x
  2. Step 2: Convert to fraction form
    516,688.20/775,053.90 = 276,701.40/x
  3. Step 3: Cross multiply
    516,688.20x = 775,053.90 × 276,701.40
  4. Step 4: Simplify right side
    516,688.20x = 214,458,499,205.46
  5. Step 5: Solve for x
    x = 214,458,499,205.46/516,688.20
  6. Step 6: Final answer
    x = 415,063.67

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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.