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Finding the Fourth Proportional to 295,072.70, 442,609.05 and 81,840.20

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Solution

The fourth proportional to 295,072.70, 442,609.05 and 81,840.20 is: 122,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,072.70 : 442,609.05 = 81,840.20 : x
  2. Step 2: Convert to fraction form
    295,072.70/442,609.05 = 81,840.20/x
  3. Step 3: Cross multiply
    295,072.70x = 442,609.05 × 81,840.20
  4. Step 4: Simplify right side
    295,072.70x = 36,223,213,173.81
  5. Step 5: Solve for x
    x = 36,223,213,173.81/295,072.70
  6. Step 6: Final answer
    x = 122,760.30

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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.