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Finding the Fourth Proportional to 555,036.18, 765,949.92 and 300,387.36

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Solution

The fourth proportional to 555,036.18, 765,949.92 and 300,387.36 is: 414,534.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,036.18 : 765,949.92 = 300,387.36 : x
  2. Step 2: Convert to fraction form
    555,036.18/765,949.92 = 300,387.36/x
  3. Step 3: Cross multiply
    555,036.18x = 765,949.92 × 300,387.36
  4. Step 4: Simplify right side
    555,036.18x = 230,081,674,361.01
  5. Step 5: Solve for x
    x = 230,081,674,361.01/555,036.18
  6. Step 6: Final answer
    x = 414,534.55

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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.