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Finding the Fourth Proportional to 318,169.80, 439,063.10 and 174,928.74

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Solution

The fourth proportional to 318,169.80, 439,063.10 and 174,928.74 is: 241,395.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,169.80 : 439,063.10 = 174,928.74 : x
  2. Step 2: Convert to fraction form
    318,169.80/439,063.10 = 174,928.74/x
  3. Step 3: Cross multiply
    318,169.80x = 439,063.10 × 174,928.74
  4. Step 4: Simplify right side
    318,169.80x = 76,804,754,863.49
  5. Step 5: Solve for x
    x = 76,804,754,863.49/318,169.80
  6. Step 6: Final answer
    x = 241,395.49

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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.