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Finding the Fourth Proportional to 170,429.60, 255,644.40 and 45,783.20

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Solution

The fourth proportional to 170,429.60, 255,644.40 and 45,783.20 is: 68,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,429.60 : 255,644.40 = 45,783.20 : x
  2. Step 2: Convert to fraction form
    170,429.60/255,644.40 = 45,783.20/x
  3. Step 3: Cross multiply
    170,429.60x = 255,644.40 × 45,783.20
  4. Step 4: Simplify right side
    170,429.60x = 11,704,218,694.08
  5. Step 5: Solve for x
    x = 11,704,218,694.08/170,429.60
  6. Step 6: Final answer
    x = 68,674.80

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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.