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Finding the Fourth Proportional to 555,163.11, 766,118.36 and 313,455.87

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Solution

The fourth proportional to 555,163.11, 766,118.36 and 313,455.87 is: 432,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,163.11 : 766,118.36 = 313,455.87 : x
  2. Step 2: Convert to fraction form
    555,163.11/766,118.36 = 313,455.87/x
  3. Step 3: Cross multiply
    555,163.11x = 766,118.36 × 313,455.87
  4. Step 4: Simplify right side
    555,163.11x = 240,144,297,840.41
  5. Step 5: Solve for x
    x = 240,144,297,840.41/555,163.11
  6. Step 6: Final answer
    x = 432,565.30

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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.