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Finding the Fourth Proportional to 305,455.76, 457,999.56 and 136,945.58

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Solution

The fourth proportional to 305,455.76, 457,999.56 and 136,945.58 is: 205,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,455.76 : 457,999.56 = 136,945.58 : x
  2. Step 2: Convert to fraction form
    305,455.76/457,999.56 = 136,945.58/x
  3. Step 3: Cross multiply
    305,455.76x = 457,999.56 × 136,945.58
  4. Step 4: Simplify right side
    305,455.76x = 62,721,015,383.94
  5. Step 5: Solve for x
    x = 62,721,015,383.94/305,455.76
  6. Step 6: Final answer
    x = 205,335.84

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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.