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Finding the Fourth Proportional to 304,142.21, 456,278.52 and 90,926.81

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Solution

The fourth proportional to 304,142.21, 456,278.52 and 90,926.81 is: 136,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,142.21 : 456,278.52 = 90,926.81 : x
  2. Step 2: Convert to fraction form
    304,142.21/456,278.52 = 90,926.81/x
  3. Step 3: Cross multiply
    304,142.21x = 456,278.52 × 90,926.81
  4. Step 4: Simplify right side
    304,142.21x = 41,487,950,295.12
  5. Step 5: Solve for x
    x = 41,487,950,295.12/304,142.21
  6. Step 6: Final answer
    x = 136,409.71

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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.