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Finding the Fourth Proportional to 303,914.80, 455,937.72 and 163,640.80

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Solution

The fourth proportional to 303,914.80, 455,937.72 and 163,640.80 is: 245,496.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,914.80 : 455,937.72 = 163,640.80 : x
  2. Step 2: Convert to fraction form
    303,914.80/455,937.72 = 163,640.80/x
  3. Step 3: Cross multiply
    303,914.80x = 455,937.72 × 163,640.80
  4. Step 4: Simplify right side
    303,914.80x = 74,610,013,250.98
  5. Step 5: Solve for x
    x = 74,610,013,250.98/303,914.80
  6. Step 6: Final answer
    x = 245,496.48

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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.