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Finding the Fourth Proportional to 393,590.16, 590,558.04 and 206,557.92

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Solution

The fourth proportional to 393,590.16, 590,558.04 and 206,557.92 is: 309,927.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,590.16 : 590,558.04 = 206,557.92 : x
  2. Step 2: Convert to fraction form
    393,590.16/590,558.04 = 206,557.92/x
  3. Step 3: Cross multiply
    393,590.16x = 590,558.04 × 206,557.92
  4. Step 4: Simplify right side
    393,590.16x = 121,984,440,381.68
  5. Step 5: Solve for x
    x = 121,984,440,381.68/393,590.16
  6. Step 6: Final answer
    x = 309,927.57

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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.