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Finding the Fourth Proportional to 295,660.40, 443,490.60 and 85,305.20

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Solution

The fourth proportional to 295,660.40, 443,490.60 and 85,305.20 is: 127,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,660.40 : 443,490.60 = 85,305.20 : x
  2. Step 2: Convert to fraction form
    295,660.40/443,490.60 = 85,305.20/x
  3. Step 3: Cross multiply
    295,660.40x = 443,490.60 × 85,305.20
  4. Step 4: Simplify right side
    295,660.40x = 37,832,054,331.12
  5. Step 5: Solve for x
    x = 37,832,054,331.12/295,660.40
  6. Step 6: Final answer
    x = 127,957.80

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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.