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Finding the Fourth Proportional to 508,815.48, 702,469.98 and 318,087.24

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Solution

The fourth proportional to 508,815.48, 702,469.98 and 318,087.24 is: 439,150.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,815.48 : 702,469.98 = 318,087.24 : x
  2. Step 2: Convert to fraction form
    508,815.48/702,469.98 = 318,087.24/x
  3. Step 3: Cross multiply
    508,815.48x = 702,469.98 × 318,087.24
  4. Step 4: Simplify right side
    508,815.48x = 223,446,737,121.06
  5. Step 5: Solve for x
    x = 223,446,737,121.06/508,815.48
  6. Step 6: Final answer
    x = 439,150.82

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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.