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Finding the Fourth Proportional to 520,234.06, 780,403.06 and 141,160.80

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Solution

The fourth proportional to 520,234.06, 780,403.06 and 141,160.80 is: 211,755.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,234.06 : 780,403.06 = 141,160.80 : x
  2. Step 2: Convert to fraction form
    520,234.06/780,403.06 = 141,160.80/x
  3. Step 3: Cross multiply
    520,234.06x = 780,403.06 × 141,160.80
  4. Step 4: Simplify right side
    520,234.06x = 110,162,320,272.05
  5. Step 5: Solve for x
    x = 110,162,320,272.05/520,234.06
  6. Step 6: Final answer
    x = 211,755.30

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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.