Home / 208,045.20-311,885.55-141,268.80

Finding the Fourth Proportional to 208,045.20, 311,885.55 and 141,268.80

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Solution

The fourth proportional to 208,045.20, 311,885.55 and 141,268.80 is: 211,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,045.20 : 311,885.55 = 141,268.80 : x
  2. Step 2: Convert to fraction form
    208,045.20/311,885.55 = 141,268.80/x
  3. Step 3: Cross multiply
    208,045.20x = 311,885.55 × 141,268.80
  4. Step 4: Simplify right side
    208,045.20x = 44,059,697,385.84
  5. Step 5: Solve for x
    x = 44,059,697,385.84/208,045.20
  6. Step 6: Final answer
    x = 211,779.45

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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.