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Finding the Fourth Proportional to 399,568.78, 599,272.08 and 146,762.38

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Solution

The fourth proportional to 399,568.78, 599,272.08 and 146,762.38 is: 220,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,568.78 : 599,272.08 = 146,762.38 : x
  2. Step 2: Convert to fraction form
    399,568.78/599,272.08 = 146,762.38/x
  3. Step 3: Cross multiply
    399,568.78x = 599,272.08 × 146,762.38
  4. Step 4: Simplify right side
    399,568.78x = 87,950,596,728.35
  5. Step 5: Solve for x
    x = 87,950,596,728.35/399,568.78
  6. Step 6: Final answer
    x = 220,113.79

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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.