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Finding the Fourth Proportional to 509,543.10, 764,314.65 and 154,539.90

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Solution

The fourth proportional to 509,543.10, 764,314.65 and 154,539.90 is: 231,809.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,543.10 : 764,314.65 = 154,539.90 : x
  2. Step 2: Convert to fraction form
    509,543.10/764,314.65 = 154,539.90/x
  3. Step 3: Cross multiply
    509,543.10x = 764,314.65 × 154,539.90
  4. Step 4: Simplify right side
    509,543.10x = 118,117,109,579.54
  5. Step 5: Solve for x
    x = 118,117,109,579.54/509,543.10
  6. Step 6: Final answer
    x = 231,809.85

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Similar ratio
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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.