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Finding the Fourth Proportional to 205,049.60, 307,574.40 and 125,907.20

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Solution

The fourth proportional to 205,049.60, 307,574.40 and 125,907.20 is: 188,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,049.60 : 307,574.40 = 125,907.20 : x
  2. Step 2: Convert to fraction form
    205,049.60/307,574.40 = 125,907.20/x
  3. Step 3: Cross multiply
    205,049.60x = 307,574.40 × 125,907.20
  4. Step 4: Simplify right side
    205,049.60x = 38,725,831,495.68
  5. Step 5: Solve for x
    x = 38,725,831,495.68/205,049.60
  6. Step 6: Final answer
    x = 188,860.80

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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.