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Finding the Fourth Proportional to 412,291.20, 618,436.80 and 202,339.20

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Solution

The fourth proportional to 412,291.20, 618,436.80 and 202,339.20 is: 303,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,291.20 : 618,436.80 = 202,339.20 : x
  2. Step 2: Convert to fraction form
    412,291.20/618,436.80 = 202,339.20/x
  3. Step 3: Cross multiply
    412,291.20x = 618,436.80 × 202,339.20
  4. Step 4: Simplify right side
    412,291.20x = 125,134,007,362.56
  5. Step 5: Solve for x
    x = 125,134,007,362.56/412,291.20
  6. Step 6: Final answer
    x = 303,508.80

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1.5x scale

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.