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Finding the Fourth Proportional to 305,242.74, 421,227 and 169,276.41

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Solution

The fourth proportional to 305,242.74, 421,227 and 169,276.41 is: 233,597.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,242.74 : 421,227 = 169,276.41 : x
  2. Step 2: Convert to fraction form
    305,242.74/421,227 = 169,276.41/x
  3. Step 3: Cross multiply
    305,242.74x = 421,227 × 169,276.41
  4. Step 4: Simplify right side
    305,242.74x = 71,303,794,355.07
  5. Step 5: Solve for x
    x = 71,303,794,355.07/305,242.74
  6. Step 6: Final answer
    x = 233,597.02

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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.