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Finding the Fourth Proportional to 555,489.31, 766,574.52 and 300,841.51

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Solution

The fourth proportional to 555,489.31, 766,574.52 and 300,841.51 is: 415,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,489.31 : 766,574.52 = 300,841.51 : x
  2. Step 2: Convert to fraction form
    555,489.31/766,574.52 = 300,841.51/x
  3. Step 3: Cross multiply
    555,489.31x = 766,574.52 × 300,841.51
  4. Step 4: Simplify right side
    555,489.31x = 230,617,436,124.33
  5. Step 5: Solve for x
    x = 230,617,436,124.33/555,489.31
  6. Step 6: Final answer
    x = 415,160.89

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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.