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Finding the Fourth Proportional to 399,656.88, 599,354.10 and 133,345.89

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Solution

The fourth proportional to 399,656.88, 599,354.10 and 133,345.89 is: 199,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,656.88 : 599,354.10 = 133,345.89 : x
  2. Step 2: Convert to fraction form
    399,656.88/599,354.10 = 133,345.89/x
  3. Step 3: Cross multiply
    399,656.88x = 599,354.10 × 133,345.89
  4. Step 4: Simplify right side
    399,656.88x = 79,921,405,889.65
  5. Step 5: Solve for x
    x = 79,921,405,889.65/399,656.88
  6. Step 6: Final answer
    x = 199,975.05

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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.