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Finding the Fourth Proportional to 662,419.20, 993,794.40 and 213,182.40

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Solution

The fourth proportional to 662,419.20, 993,794.40 and 213,182.40 is: 319,826.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,419.20 : 993,794.40 = 213,182.40 : x
  2. Step 2: Convert to fraction form
    662,419.20/993,794.40 = 213,182.40/x
  3. Step 3: Cross multiply
    662,419.20x = 993,794.40 × 213,182.40
  4. Step 4: Simplify right side
    662,419.20x = 211,859,475,298.56
  5. Step 5: Solve for x
    x = 211,859,475,298.56/662,419.20
  6. Step 6: Final answer
    x = 319,826.89

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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.