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Finding the Fourth Proportional to 284,720.40, 427,080.60 and 180,003.60

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Solution

The fourth proportional to 284,720.40, 427,080.60 and 180,003.60 is: 270,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,720.40 : 427,080.60 = 180,003.60 : x
  2. Step 2: Convert to fraction form
    284,720.40/427,080.60 = 180,003.60/x
  3. Step 3: Cross multiply
    284,720.40x = 427,080.60 × 180,003.60
  4. Step 4: Simplify right side
    284,720.40x = 76,876,045,490.16
  5. Step 5: Solve for x
    x = 76,876,045,490.16/284,720.40
  6. Step 6: Final answer
    x = 270,005.40

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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.