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Finding the Fourth Proportional to 479,537.36, 719,440.90 and 209,689.24

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Solution

The fourth proportional to 479,537.36, 719,440.90 and 209,689.24 is: 314,592.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,537.36 : 719,440.90 = 209,689.24 : x
  2. Step 2: Convert to fraction form
    479,537.36/719,440.90 = 209,689.24/x
  3. Step 3: Cross multiply
    479,537.36x = 719,440.90 × 209,689.24
  4. Step 4: Simplify right side
    479,537.36x = 150,859,015,545.92
  5. Step 5: Solve for x
    x = 150,859,015,545.92/479,537.36
  6. Step 6: Final answer
    x = 314,592.83

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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.