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Finding the Fourth Proportional to 305,247.66, 421,245.54 and 169,283.49

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Solution

The fourth proportional to 305,247.66, 421,245.54 and 169,283.49 is: 233,613.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,247.66 : 421,245.54 = 169,283.49 : x
  2. Step 2: Convert to fraction form
    305,247.66/421,245.54 = 169,283.49/x
  3. Step 3: Cross multiply
    305,247.66x = 421,245.54 × 169,283.49
  4. Step 4: Simplify right side
    305,247.66x = 71,309,915,158.13
  5. Step 5: Solve for x
    x = 71,309,915,158.13/305,247.66
  6. Step 6: Final answer
    x = 233,613.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.