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Finding the Fourth Proportional to 303,904.32, 455,717.88 and 126,305.52

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Solution

The fourth proportional to 303,904.32, 455,717.88 and 126,305.52 is: 189,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,904.32 : 455,717.88 = 126,305.52 : x
  2. Step 2: Convert to fraction form
    303,904.32/455,717.88 = 126,305.52/x
  3. Step 3: Cross multiply
    303,904.32x = 455,717.88 × 126,305.52
  4. Step 4: Simplify right side
    303,904.32x = 57,559,683,806.70
  5. Step 5: Solve for x
    x = 57,559,683,806.70/303,904.32
  6. Step 6: Final answer
    x = 189,400.68

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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.