Home / 208,214.34-312,379.83-83,642.82

Finding the Fourth Proportional to 208,214.34, 312,379.83 and 83,642.82

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Solution

The fourth proportional to 208,214.34, 312,379.83 and 83,642.82 is: 125,487.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,214.34 : 312,379.83 = 83,642.82 : x
  2. Step 2: Convert to fraction form
    208,214.34/312,379.83 = 83,642.82/x
  3. Step 3: Cross multiply
    208,214.34x = 312,379.83 × 83,642.82
  4. Step 4: Simplify right side
    208,214.34x = 26,128,329,892.32
  5. Step 5: Solve for x
    x = 26,128,329,892.32/208,214.34
  6. Step 6: Final answer
    x = 125,487.66

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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.