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Finding the Fourth Proportional to 412,812.10, 619,218.15 and 163,494.10

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Solution

The fourth proportional to 412,812.10, 619,218.15 and 163,494.10 is: 245,241.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,812.10 : 619,218.15 = 163,494.10 : x
  2. Step 2: Convert to fraction form
    412,812.10/619,218.15 = 163,494.10/x
  3. Step 3: Cross multiply
    412,812.10x = 619,218.15 × 163,494.10
  4. Step 4: Simplify right side
    412,812.10x = 101,238,514,137.92
  5. Step 5: Solve for x
    x = 101,238,514,137.92/412,812.10
  6. Step 6: Final answer
    x = 245,241.15

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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.