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Finding the Fourth Proportional to 305,525.78, 421,650.74 and 169,557.26

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Solution

The fourth proportional to 305,525.78, 421,650.74 and 169,557.26 is: 234,002.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,525.78 : 421,650.74 = 169,557.26 : x
  2. Step 2: Convert to fraction form
    305,525.78/421,650.74 = 169,557.26/x
  3. Step 3: Cross multiply
    305,525.78x = 421,650.74 × 169,557.26
  4. Step 4: Simplify right side
    305,525.78x = 71,493,944,151.37
  5. Step 5: Solve for x
    x = 71,493,944,151.37/305,525.78
  6. Step 6: Final answer
    x = 234,002.98

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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.