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Finding the Fourth Proportional to 305,049.20, 457,604.20 and 127,611.76

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Solution

The fourth proportional to 305,049.20, 457,604.20 and 127,611.76 is: 191,430.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,049.20 : 457,604.20 = 127,611.76 : x
  2. Step 2: Convert to fraction form
    305,049.20/457,604.20 = 127,611.76/x
  3. Step 3: Cross multiply
    305,049.20x = 457,604.20 × 127,611.76
  4. Step 4: Simplify right side
    305,049.20x = 58,395,677,345.39
  5. Step 5: Solve for x
    x = 58,395,677,345.39/305,049.20
  6. Step 6: Final answer
    x = 191,430.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.