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Finding the Fourth Proportional to 555,217.26, 766,196.40 and 300,566.64

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Solution

The fourth proportional to 555,217.26, 766,196.40 and 300,566.64 is: 414,780.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,217.26 : 766,196.40 = 300,566.64 : x
  2. Step 2: Convert to fraction form
    555,217.26/766,196.40 = 300,566.64/x
  3. Step 3: Cross multiply
    555,217.26x = 766,196.40 × 300,566.64
  4. Step 4: Simplify right side
    555,217.26x = 230,293,077,528.10
  5. Step 5: Solve for x
    x = 230,293,077,528.10/555,217.26
  6. Step 6: Final answer
    x = 414,780.11

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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.