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Finding the Fourth Proportional to 471,818.07, 707,228.55 and 321,686.19

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Solution

The fourth proportional to 471,818.07, 707,228.55 and 321,686.19 is: 482,189.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,818.07 : 707,228.55 = 321,686.19 : x
  2. Step 2: Convert to fraction form
    471,818.07/707,228.55 = 321,686.19/x
  3. Step 3: Cross multiply
    471,818.07x = 707,228.55 × 321,686.19
  4. Step 4: Simplify right side
    471,818.07x = 227,505,657,708.73
  5. Step 5: Solve for x
    x = 227,505,657,708.73/471,818.07
  6. Step 6: Final answer
    x = 482,189.37

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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.