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Finding the Fourth Proportional to 304,489.80, 455,859.90 and 186,391.80

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Solution

The fourth proportional to 304,489.80, 455,859.90 and 186,391.80 is: 279,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,489.80 : 455,859.90 = 186,391.80 : x
  2. Step 2: Convert to fraction form
    304,489.80/455,859.90 = 186,391.80/x
  3. Step 3: Cross multiply
    304,489.80x = 455,859.90 × 186,391.80
  4. Step 4: Simplify right side
    304,489.80x = 84,968,547,308.82
  5. Step 5: Solve for x
    x = 84,968,547,308.82/304,489.80
  6. Step 6: Final answer
    x = 279,052.20

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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.