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Finding the Fourth Proportional to 617,620.10, 926,430.15 and 218,273.90

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Solution

The fourth proportional to 617,620.10, 926,430.15 and 218,273.90 is: 327,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,620.10 : 926,430.15 = 218,273.90 : x
  2. Step 2: Convert to fraction form
    617,620.10/926,430.15 = 218,273.90/x
  3. Step 3: Cross multiply
    617,620.10x = 926,430.15 × 218,273.90
  4. Step 4: Simplify right side
    617,620.10x = 202,215,521,918.09
  5. Step 5: Solve for x
    x = 202,215,521,918.09/617,620.10
  6. Step 6: Final answer
    x = 327,410.85

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Similar ratio
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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.