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Finding the Fourth Proportional to 668,052.80, 1,002,079.20 and 169,416.80

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Solution

The fourth proportional to 668,052.80, 1,002,079.20 and 169,416.80 is: 254,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,052.80 : 1,002,079.20 = 169,416.80 : x
  2. Step 2: Convert to fraction form
    668,052.80/1,002,079.20 = 169,416.80/x
  3. Step 3: Cross multiply
    668,052.80x = 1,002,079.20 × 169,416.80
  4. Step 4: Simplify right side
    668,052.80x = 169,769,051,410.56
  5. Step 5: Solve for x
    x = 169,769,051,410.56/668,052.80
  6. Step 6: Final answer
    x = 254,125.20

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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.