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Finding the Fourth Proportional to 304,784.18, 420,807.69 and 190,237.32

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Solution

The fourth proportional to 304,784.18, 420,807.69 and 190,237.32 is: 262,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,784.18 : 420,807.69 = 190,237.32 : x
  2. Step 2: Convert to fraction form
    304,784.18/420,807.69 = 190,237.32/x
  3. Step 3: Cross multiply
    304,784.18x = 420,807.69 × 190,237.32
  4. Step 4: Simplify right side
    304,784.18x = 80,053,327,180.99
  5. Step 5: Solve for x
    x = 80,053,327,180.99/304,784.18
  6. Step 6: Final answer
    x = 262,655.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.