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Finding the Fourth Proportional to 540,611.50, 810,129.92 and 259,800.70

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Solution

The fourth proportional to 540,611.50, 810,129.92 and 259,800.70 is: 389,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,611.50 : 810,129.92 = 259,800.70 : x
  2. Step 2: Convert to fraction form
    540,611.50/810,129.92 = 259,800.70/x
  3. Step 3: Cross multiply
    540,611.50x = 810,129.92 × 259,800.70
  4. Step 4: Simplify right side
    540,611.50x = 210,472,320,306.94
  5. Step 5: Solve for x
    x = 210,472,320,306.94/540,611.50
  6. Step 6: Final answer
    x = 389,322.68

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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.