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Finding the Fourth Proportional to 555,458.88, 766,532.10 and 300,809.28

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Solution

The fourth proportional to 555,458.88, 766,532.10 and 300,809.28 is: 415,116.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,458.88 : 766,532.10 = 300,809.28 : x
  2. Step 2: Convert to fraction form
    555,458.88/766,532.10 = 300,809.28/x
  3. Step 3: Cross multiply
    555,458.88x = 766,532.10 × 300,809.28
  4. Step 4: Simplify right side
    555,458.88x = 230,579,969,097.89
  5. Step 5: Solve for x
    x = 230,579,969,097.89/555,458.88
  6. Step 6: Final answer
    x = 415,116.18

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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.