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Finding the Fourth Proportional to 351,803.80, 527,665.20 and 102,485.80

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Solution

The fourth proportional to 351,803.80, 527,665.20 and 102,485.80 is: 153,716.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,803.80 : 527,665.20 = 102,485.80 : x
  2. Step 2: Convert to fraction form
    351,803.80/527,665.20 = 102,485.80/x
  3. Step 3: Cross multiply
    351,803.80x = 527,665.20 × 102,485.80
  4. Step 4: Simplify right side
    351,803.80x = 54,078,190,154.16
  5. Step 5: Solve for x
    x = 54,078,190,154.16/351,803.80
  6. Step 6: Final answer
    x = 153,716.90

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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.