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Finding the Fourth Proportional to 205,511.60, 308,267.40 and 57,748.40

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Solution

The fourth proportional to 205,511.60, 308,267.40 and 57,748.40 is: 86,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,511.60 : 308,267.40 = 57,748.40 : x
  2. Step 2: Convert to fraction form
    205,511.60/308,267.40 = 57,748.40/x
  3. Step 3: Cross multiply
    205,511.60x = 308,267.40 × 57,748.40
  4. Step 4: Simplify right side
    205,511.60x = 17,801,949,122.16
  5. Step 5: Solve for x
    x = 17,801,949,122.16/205,511.60
  6. Step 6: Final answer
    x = 86,622.60

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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.