Home / 287,261.54-430,921.80-109,917.71

Finding the Fourth Proportional to 287,261.54, 430,921.80 and 109,917.71

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Solution

The fourth proportional to 287,261.54, 430,921.80 and 109,917.71 is: 164,887.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,261.54 : 430,921.80 = 109,917.71 : x
  2. Step 2: Convert to fraction form
    287,261.54/430,921.80 = 109,917.71/x
  3. Step 3: Cross multiply
    287,261.54x = 430,921.80 × 109,917.71
  4. Step 4: Simplify right side
    287,261.54x = 47,365,935,290.47
  5. Step 5: Solve for x
    x = 47,365,935,290.47/287,261.54
  6. Step 6: Final answer
    x = 164,887.84

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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.