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Finding the Fourth Proportional to 272,939.60, 409,020.60 and 201,303.20

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Solution

The fourth proportional to 272,939.60, 409,020.60 and 201,303.20 is: 301,668.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,939.60 : 409,020.60 = 201,303.20 : x
  2. Step 2: Convert to fraction form
    272,939.60/409,020.60 = 201,303.20/x
  3. Step 3: Cross multiply
    272,939.60x = 409,020.60 × 201,303.20
  4. Step 4: Simplify right side
    272,939.60x = 82,337,155,645.92
  5. Step 5: Solve for x
    x = 82,337,155,645.92/272,939.60
  6. Step 6: Final answer
    x = 301,668.05

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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.