Home / 209,731.40-313,905.90-162,729.80

Finding the Fourth Proportional to 209,731.40, 313,905.90 and 162,729.80

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Solution

The fourth proportional to 209,731.40, 313,905.90 and 162,729.80 is: 243,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,731.40 : 313,905.90 = 162,729.80 : x
  2. Step 2: Convert to fraction form
    209,731.40/313,905.90 = 162,729.80/x
  3. Step 3: Cross multiply
    209,731.40x = 313,905.90 × 162,729.80
  4. Step 4: Simplify right side
    209,731.40x = 51,081,844,325.82
  5. Step 5: Solve for x
    x = 51,081,844,325.82/209,731.40
  6. Step 6: Final answer
    x = 243,558.40

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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.