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Finding the Fourth Proportional to 617,957.60, 926,936.40 and 218,611.40

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Solution

The fourth proportional to 617,957.60, 926,936.40 and 218,611.40 is: 327,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,957.60 : 926,936.40 = 218,611.40 : x
  2. Step 2: Convert to fraction form
    617,957.60/926,936.40 = 218,611.40/x
  3. Step 3: Cross multiply
    617,957.60x = 926,936.40 × 218,611.40
  4. Step 4: Simplify right side
    617,957.60x = 202,638,864,114.96
  5. Step 5: Solve for x
    x = 202,638,864,114.96/617,957.60
  6. Step 6: Final answer
    x = 327,917.10

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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.