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Finding the Fourth Proportional to 402,490.60, 603,729.73 and 102,968.64

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Solution

The fourth proportional to 402,490.60, 603,729.73 and 102,968.64 is: 154,451.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,490.60 : 603,729.73 = 102,968.64 : x
  2. Step 2: Convert to fraction form
    402,490.60/603,729.73 = 102,968.64/x
  3. Step 3: Cross multiply
    402,490.60x = 603,729.73 × 102,968.64
  4. Step 4: Simplify right side
    402,490.60x = 62,165,229,354.38
  5. Step 5: Solve for x
    x = 62,165,229,354.38/402,490.60
  6. Step 6: Final answer
    x = 154,451.38

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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.