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Finding the Fourth Proportional to 617,652.72, 926,553.83 and 218,211.76

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Solution

The fourth proportional to 617,652.72, 926,553.83 and 218,211.76 is: 327,344.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,652.72 : 926,553.83 = 218,211.76 : x
  2. Step 2: Convert to fraction form
    617,652.72/926,553.83 = 218,211.76/x
  3. Step 3: Cross multiply
    617,652.72x = 926,553.83 × 218,211.76
  4. Step 4: Simplify right side
    617,652.72x = 202,184,941,979.04
  5. Step 5: Solve for x
    x = 202,184,941,979.04/617,652.72
  6. Step 6: Final answer
    x = 327,344.05

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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.