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Finding the Fourth Proportional to 284,844.40, 427,234.20 and 74,503.60

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Solution

The fourth proportional to 284,844.40, 427,234.20 and 74,503.60 is: 111,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,844.40 : 427,234.20 = 74,503.60 : x
  2. Step 2: Convert to fraction form
    284,844.40/427,234.20 = 74,503.60/x
  3. Step 3: Cross multiply
    284,844.40x = 427,234.20 × 74,503.60
  4. Step 4: Simplify right side
    284,844.40x = 31,830,485,943.12
  5. Step 5: Solve for x
    x = 31,830,485,943.12/284,844.40
  6. Step 6: Final answer
    x = 111,746.93

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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.