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Finding the Fourth Proportional to 320,433.20, 480,131.40 and 201,892.40

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Solution

The fourth proportional to 320,433.20, 480,131.40 and 201,892.40 is: 302,511.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,433.20 : 480,131.40 = 201,892.40 : x
  2. Step 2: Convert to fraction form
    320,433.20/480,131.40 = 201,892.40/x
  3. Step 3: Cross multiply
    320,433.20x = 480,131.40 × 201,892.40
  4. Step 4: Simplify right side
    320,433.20x = 96,934,880,661.36
  5. Step 5: Solve for x
    x = 96,934,880,661.36/320,433.20
  6. Step 6: Final answer
    x = 302,511.98

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1.5x scale

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.