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Finding the Fourth Proportional to 304,498.80, 455,873.40 and 186,400.80

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Solution

The fourth proportional to 304,498.80, 455,873.40 and 186,400.80 is: 279,065.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,498.80 : 455,873.40 = 186,400.80 : x
  2. Step 2: Convert to fraction form
    304,498.80/455,873.40 = 186,400.80/x
  3. Step 3: Cross multiply
    304,498.80x = 455,873.40 × 186,400.80
  4. Step 4: Simplify right side
    304,498.80x = 84,975,166,458.72
  5. Step 5: Solve for x
    x = 84,975,166,458.72/304,498.80
  6. Step 6: Final answer
    x = 279,065.69

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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.