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Finding the Fourth Proportional to 304,530.80, 455,921.40 and 186,432.80

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Solution

The fourth proportional to 304,530.80, 455,921.40 and 186,432.80 is: 279,113.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,530.80 : 455,921.40 = 186,432.80 : x
  2. Step 2: Convert to fraction form
    304,530.80/455,921.40 = 186,432.80/x
  3. Step 3: Cross multiply
    304,530.80x = 455,921.40 × 186,432.80
  4. Step 4: Simplify right side
    304,530.80x = 84,998,703,181.92
  5. Step 5: Solve for x
    x = 84,998,703,181.92/304,530.80
  6. Step 6: Final answer
    x = 279,113.65

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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.