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Finding the Fourth Proportional to 303,717.50, 455,603.49 and 79,079.88

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Solution

The fourth proportional to 303,717.50, 455,603.49 and 79,079.88 is: 118,626.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,717.50 : 455,603.49 = 79,079.88 : x
  2. Step 2: Convert to fraction form
    303,717.50/455,603.49 = 79,079.88/x
  3. Step 3: Cross multiply
    303,717.50x = 455,603.49 × 79,079.88
  4. Step 4: Simplify right side
    303,717.50x = 36,029,069,119.08
  5. Step 5: Solve for x
    x = 36,029,069,119.08/303,717.50
  6. Step 6: Final answer
    x = 118,626.91

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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.