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Finding the Fourth Proportional to 210,682.60, 315,563.10 and 163,565.80

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Solution

The fourth proportional to 210,682.60, 315,563.10 and 163,565.80 is: 244,990.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,682.60 : 315,563.10 = 163,565.80 : x
  2. Step 2: Convert to fraction form
    210,682.60/315,563.10 = 163,565.80/x
  3. Step 3: Cross multiply
    210,682.60x = 315,563.10 × 163,565.80
  4. Step 4: Simplify right side
    210,682.60x = 51,615,330,901.98
  5. Step 5: Solve for x
    x = 51,615,330,901.98/210,682.60
  6. Step 6: Final answer
    x = 244,990.95

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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.