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Finding the Fourth Proportional to 205,513.60, 308,587.20 and 112,201.60

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Solution

The fourth proportional to 205,513.60, 308,587.20 and 112,201.60 is: 168,475.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,513.60 : 308,587.20 = 112,201.60 : x
  2. Step 2: Convert to fraction form
    205,513.60/308,587.20 = 112,201.60/x
  3. Step 3: Cross multiply
    205,513.60x = 308,587.20 × 112,201.60
  4. Step 4: Simplify right side
    205,513.60x = 34,623,977,579.52
  5. Step 5: Solve for x
    x = 34,623,977,579.52/205,513.60
  6. Step 6: Final answer
    x = 168,475.36

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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.