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Finding the Fourth Proportional to 399,911.99, 600,019.49 and 240,099.52

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Solution

The fourth proportional to 399,911.99, 600,019.49 and 240,099.52 is: 360,240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,911.99 : 600,019.49 = 240,099.52 : x
  2. Step 2: Convert to fraction form
    399,911.99/600,019.49 = 240,099.52/x
  3. Step 3: Cross multiply
    399,911.99x = 600,019.49 × 240,099.52
  4. Step 4: Simplify right side
    399,911.99x = 144,064,391,539.65
  5. Step 5: Solve for x
    x = 144,064,391,539.65/399,911.99
  6. Step 6: Final answer
    x = 360,240.24

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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.