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Finding the Fourth Proportional to 391,539.50, 587,309.26 and 169,923.50

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Solution

The fourth proportional to 391,539.50, 587,309.26 and 169,923.50 is: 254,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,539.50 : 587,309.26 = 169,923.50 : x
  2. Step 2: Convert to fraction form
    391,539.50/587,309.26 = 169,923.50/x
  3. Step 3: Cross multiply
    391,539.50x = 587,309.26 × 169,923.50
  4. Step 4: Simplify right side
    391,539.50x = 99,797,645,041.61
  5. Step 5: Solve for x
    x = 99,797,645,041.61/391,539.50
  6. Step 6: Final answer
    x = 254,885.25

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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.