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Finding the Fourth Proportional to 305,303.45, 421,301.55 and 169,327.63

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Solution

The fourth proportional to 305,303.45, 421,301.55 and 169,327.63 is: 233,662.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,303.45 : 421,301.55 = 169,327.63 : x
  2. Step 2: Convert to fraction form
    305,303.45/421,301.55 = 169,327.63/x
  3. Step 3: Cross multiply
    305,303.45x = 421,301.55 × 169,327.63
  4. Step 4: Simplify right side
    305,303.45x = 71,337,994,138.43
  5. Step 5: Solve for x
    x = 71,337,994,138.43/305,303.45
  6. Step 6: Final answer
    x = 233,662.59

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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.