Home / 320,912.86-442,590.71-206,210.18

Finding the Fourth Proportional to 320,912.86, 442,590.71 and 206,210.18

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Solution

The fourth proportional to 320,912.86, 442,590.71 and 206,210.18 is: 284,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,912.86 : 442,590.71 = 206,210.18 : x
  2. Step 2: Convert to fraction form
    320,912.86/442,590.71 = 206,210.18/x
  3. Step 3: Cross multiply
    320,912.86x = 442,590.71 × 206,210.18
  4. Step 4: Simplify right side
    320,912.86x = 91,266,709,386.03
  5. Step 5: Solve for x
    x = 91,266,709,386.03/320,912.86
  6. Step 6: Final answer
    x = 284,397.17

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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.