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Finding the Fourth Proportional to 555,108.72, 766,055.64 and 300,465.36

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Solution

The fourth proportional to 555,108.72, 766,055.64 and 300,465.36 is: 414,645.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,108.72 : 766,055.64 = 300,465.36 : x
  2. Step 2: Convert to fraction form
    555,108.72/766,055.64 = 300,465.36/x
  3. Step 3: Cross multiply
    555,108.72x = 766,055.64 × 300,465.36
  4. Step 4: Simplify right side
    555,108.72x = 230,173,183,652.63
  5. Step 5: Solve for x
    x = 230,173,183,652.63/555,108.72
  6. Step 6: Final answer
    x = 414,645.23

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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.