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Finding the Fourth Proportional to 305,446.48, 421,539.30 and 169,506.22

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Solution

The fourth proportional to 305,446.48, 421,539.30 and 169,506.22 is: 233,931.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,446.48 : 421,539.30 = 169,506.22 : x
  2. Step 2: Convert to fraction form
    305,446.48/421,539.30 = 169,506.22/x
  3. Step 3: Cross multiply
    305,446.48x = 421,539.30 × 169,506.22
  4. Step 4: Simplify right side
    305,446.48x = 71,453,533,324.45
  5. Step 5: Solve for x
    x = 71,453,533,324.45/305,446.48
  6. Step 6: Final answer
    x = 233,931.43

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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.