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Finding the Fourth Proportional to 545,408.66, 818,110.74 and 166,328.27

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Solution

The fourth proportional to 545,408.66, 818,110.74 and 166,328.27 is: 249,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,408.66 : 818,110.74 = 166,328.27 : x
  2. Step 2: Convert to fraction form
    545,408.66/818,110.74 = 166,328.27/x
  3. Step 3: Cross multiply
    545,408.66x = 818,110.74 × 166,328.27
  4. Step 4: Simplify right side
    545,408.66x = 136,074,939,962.07
  5. Step 5: Solve for x
    x = 136,074,939,962.07/545,408.66
  6. Step 6: Final answer
    x = 249,491.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.