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Finding the Fourth Proportional to 412,628.40, 618,582.60 and 160,081.20

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Solution

The fourth proportional to 412,628.40, 618,582.60 and 160,081.20 is: 239,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,628.40 : 618,582.60 = 160,081.20 : x
  2. Step 2: Convert to fraction form
    412,628.40/618,582.60 = 160,081.20/x
  3. Step 3: Cross multiply
    412,628.40x = 618,582.60 × 160,081.20
  4. Step 4: Simplify right side
    412,628.40x = 99,023,444,907.12
  5. Step 5: Solve for x
    x = 99,023,444,907.12/412,628.40
  6. Step 6: Final answer
    x = 239,982.14

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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.