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Finding the Fourth Proportional to 617,238.36, 851,769.36 and 345,311.01

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Solution

The fourth proportional to 617,238.36, 851,769.36 and 345,311.01 is: 476,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,238.36 : 851,769.36 = 345,311.01 : x
  2. Step 2: Convert to fraction form
    617,238.36/851,769.36 = 345,311.01/x
  3. Step 3: Cross multiply
    617,238.36x = 851,769.36 × 345,311.01
  4. Step 4: Simplify right side
    617,238.36x = 294,125,337,988.65
  5. Step 5: Solve for x
    x = 294,125,337,988.65/617,238.36
  6. Step 6: Final answer
    x = 476,518.24

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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.