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Finding the Fourth Proportional to 555,164.61, 766,120.43 and 313,457.37

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Solution

The fourth proportional to 555,164.61, 766,120.43 and 313,457.37 is: 432,567.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,164.61 : 766,120.43 = 313,457.37 : x
  2. Step 2: Convert to fraction form
    555,164.61/766,120.43 = 313,457.37/x
  3. Step 3: Cross multiply
    555,164.61x = 766,120.43 × 313,457.37
  4. Step 4: Simplify right side
    555,164.61x = 240,146,093,523.78
  5. Step 5: Solve for x
    x = 240,146,093,523.78/555,164.61
  6. Step 6: Final answer
    x = 432,567.37

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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.