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Finding the Fourth Proportional to 304,015.78, 455,777.70 and 126,656.02

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Solution

The fourth proportional to 304,015.78, 455,777.70 and 126,656.02 is: 189,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,015.78 : 455,777.70 = 126,656.02 : x
  2. Step 2: Convert to fraction form
    304,015.78/455,777.70 = 126,656.02/x
  3. Step 3: Cross multiply
    304,015.78x = 455,777.70 × 126,656.02
  4. Step 4: Simplify right side
    304,015.78x = 57,726,989,486.75
  5. Step 5: Solve for x
    x = 57,726,989,486.75/304,015.78
  6. Step 6: Final answer
    x = 189,881.56

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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.