Home / 320,430.20-480,126.90-201,889.40

Finding the Fourth Proportional to 320,430.20, 480,126.90 and 201,889.40

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Solution

The fourth proportional to 320,430.20, 480,126.90 and 201,889.40 is: 302,507.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,430.20 : 480,126.90 = 201,889.40 : x
  2. Step 2: Convert to fraction form
    320,430.20/480,126.90 = 201,889.40/x
  3. Step 3: Cross multiply
    320,430.20x = 480,126.90 × 201,889.40
  4. Step 4: Simplify right side
    320,430.20x = 96,932,531,764.86
  5. Step 5: Solve for x
    x = 96,932,531,764.86/320,430.20
  6. Step 6: Final answer
    x = 302,507.48

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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.