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Finding the Fourth Proportional to 305,559.60, 421,669.07 and 169,594.72

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Solution

The fourth proportional to 305,559.60, 421,669.07 and 169,594.72 is: 234,038.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,559.60 : 421,669.07 = 169,594.72 : x
  2. Step 2: Convert to fraction form
    305,559.60/421,669.07 = 169,594.72/x
  3. Step 3: Cross multiply
    305,559.60x = 421,669.07 × 169,594.72
  4. Step 4: Simplify right side
    305,559.60x = 71,512,847,859.31
  5. Step 5: Solve for x
    x = 71,512,847,859.31/305,559.60
  6. Step 6: Final answer
    x = 234,038.95

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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.