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Finding the Fourth Proportional to 305,574.80, 421,686.69 and 169,600.82

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Solution

The fourth proportional to 305,574.80, 421,686.69 and 169,600.82 is: 234,045.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,574.80 : 421,686.69 = 169,600.82 : x
  2. Step 2: Convert to fraction form
    305,574.80/421,686.69 = 169,600.82/x
  3. Step 3: Cross multiply
    305,574.80x = 421,686.69 × 169,600.82
  4. Step 4: Simplify right side
    305,574.80x = 71,518,408,407.09
  5. Step 5: Solve for x
    x = 71,518,408,407.09/305,574.80
  6. Step 6: Final answer
    x = 234,045.51

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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.