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Finding the Fourth Proportional to 520,191.60, 780,131.88 and 270,737.52

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Solution

The fourth proportional to 520,191.60, 780,131.88 and 270,737.52 is: 406,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,191.60 : 780,131.88 = 270,737.52 : x
  2. Step 2: Convert to fraction form
    520,191.60/780,131.88 = 270,737.52/x
  3. Step 3: Cross multiply
    520,191.60x = 780,131.88 × 270,737.52
  4. Step 4: Simplify right side
    520,191.60x = 211,210,970,464.14
  5. Step 5: Solve for x
    x = 211,210,970,464.14/520,191.60
  6. Step 6: Final answer
    x = 406,025.34

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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.