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Finding the Fourth Proportional to 555,216.30, 766,198.76 and 300,567.51

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Solution

The fourth proportional to 555,216.30, 766,198.76 and 300,567.51 is: 414,783.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,216.30 : 766,198.76 = 300,567.51 : x
  2. Step 2: Convert to fraction form
    555,216.30/766,198.76 = 300,567.51/x
  3. Step 3: Cross multiply
    555,216.30x = 766,198.76 × 300,567.51
  4. Step 4: Simplify right side
    555,216.30x = 230,294,451,955.45
  5. Step 5: Solve for x
    x = 230,294,451,955.45/555,216.30
  6. Step 6: Final answer
    x = 414,783.31

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1.5x scale

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.