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Finding the Fourth Proportional to 170,486.40, 255,748.80 and 52,156.80

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Solution

The fourth proportional to 170,486.40, 255,748.80 and 52,156.80 is: 78,241.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,486.40 : 255,748.80 = 52,156.80 : x
  2. Step 2: Convert to fraction form
    170,486.40/255,748.80 = 52,156.80/x
  3. Step 3: Cross multiply
    170,486.40x = 255,748.80 × 52,156.80
  4. Step 4: Simplify right side
    170,486.40x = 13,339,039,011.84
  5. Step 5: Solve for x
    x = 13,339,039,011.84/170,486.40
  6. Step 6: Final answer
    x = 78,241.07

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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.