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Finding the Fourth Proportional to 555,051.35, 765,973.13 and 300,402.47

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Solution

The fourth proportional to 555,051.35, 765,973.13 and 300,402.47 is: 414,556.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,051.35 : 765,973.13 = 300,402.47 : x
  2. Step 2: Convert to fraction form
    555,051.35/765,973.13 = 300,402.47/x
  3. Step 3: Cross multiply
    555,051.35x = 765,973.13 × 300,402.47
  4. Step 4: Simplify right side
    555,051.35x = 230,100,214,873.75
  5. Step 5: Solve for x
    x = 230,100,214,873.75/555,051.35
  6. Step 6: Final answer
    x = 414,556.63

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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.