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Finding the Fourth Proportional to 399,858.20, 600,048.37 and 147,141.23

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Solution

The fourth proportional to 399,858.20, 600,048.37 and 147,141.23 is: 220,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,858.20 : 600,048.37 = 147,141.23 : x
  2. Step 2: Convert to fraction form
    399,858.20/600,048.37 = 147,141.23/x
  3. Step 3: Cross multiply
    399,858.20x = 600,048.37 × 147,141.23
  4. Step 4: Simplify right side
    399,858.20x = 88,291,855,221.30
  5. Step 5: Solve for x
    x = 88,291,855,221.30/399,858.20
  6. Step 6: Final answer
    x = 220,807.91

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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.