Home / 208,720.35-287,923.77-148,315.41

Finding the Fourth Proportional to 208,720.35, 287,923.77 and 148,315.41

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Solution

The fourth proportional to 208,720.35, 287,923.77 and 148,315.41 is: 204,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,720.35 : 287,923.77 = 148,315.41 : x
  2. Step 2: Convert to fraction form
    208,720.35/287,923.77 = 148,315.41/x
  3. Step 3: Cross multiply
    208,720.35x = 287,923.77 × 148,315.41
  4. Step 4: Simplify right side
    208,720.35x = 42,703,531,996.30
  5. Step 5: Solve for x
    x = 42,703,531,996.30/208,720.35
  6. Step 6: Final answer
    x = 204,596.88

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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.