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Finding the Fourth Proportional to 470,531.19, 649,331.73 and 255,672

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Solution

The fourth proportional to 470,531.19, 649,331.73 and 255,672 is: 352,826.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,531.19 : 649,331.73 = 255,672 : x
  2. Step 2: Convert to fraction form
    470,531.19/649,331.73 = 255,672/x
  3. Step 3: Cross multiply
    470,531.19x = 649,331.73 × 255,672
  4. Step 4: Simplify right side
    470,531.19x = 166,015,942,072.56
  5. Step 5: Solve for x
    x = 166,015,942,072.56/470,531.19
  6. Step 6: Final answer
    x = 352,826.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.