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Finding the Fourth Proportional to 306,728.10, 460,092.15 and 156,918.60

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Solution

The fourth proportional to 306,728.10, 460,092.15 and 156,918.60 is: 235,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,728.10 : 460,092.15 = 156,918.60 : x
  2. Step 2: Convert to fraction form
    306,728.10/460,092.15 = 156,918.60/x
  3. Step 3: Cross multiply
    306,728.10x = 460,092.15 × 156,918.60
  4. Step 4: Simplify right side
    306,728.10x = 72,197,016,048.99
  5. Step 5: Solve for x
    x = 72,197,016,048.99/306,728.10
  6. Step 6: Final answer
    x = 235,377.90

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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.