Home / 208,589.17-312,561.72-140,855.77

Finding the Fourth Proportional to 208,589.17, 312,561.72 and 140,855.77

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Solution

The fourth proportional to 208,589.17, 312,561.72 and 140,855.77 is: 211,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,589.17 : 312,561.72 = 140,855.77 : x
  2. Step 2: Convert to fraction form
    208,589.17/312,561.72 = 140,855.77/x
  3. Step 3: Cross multiply
    208,589.17x = 312,561.72 × 140,855.77
  4. Step 4: Simplify right side
    208,589.17x = 44,026,121,743.12
  5. Step 5: Solve for x
    x = 44,026,121,743.12/208,589.17
  6. Step 6: Final answer
    x = 211,066.19

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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.