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Finding the Fourth Proportional to 555,051.67, 765,971.30 and 300,402.86

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Solution

The fourth proportional to 555,051.67, 765,971.30 and 300,402.86 is: 414,555.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,051.67 : 765,971.30 = 300,402.86 : x
  2. Step 2: Convert to fraction form
    555,051.67/765,971.30 = 300,402.86/x
  3. Step 3: Cross multiply
    555,051.67x = 765,971.30 × 300,402.86
  4. Step 4: Simplify right side
    555,051.67x = 230,099,966,119.07
  5. Step 5: Solve for x
    x = 230,099,966,119.07/555,051.67
  6. Step 6: Final answer
    x = 414,555.94

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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.