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Finding the Fourth Proportional to 319,412.46, 440,649.99 and 210,375.93

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Solution

The fourth proportional to 319,412.46, 440,649.99 and 210,375.93 is: 290,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,412.46 : 440,649.99 = 210,375.93 : x
  2. Step 2: Convert to fraction form
    319,412.46/440,649.99 = 210,375.93/x
  3. Step 3: Cross multiply
    319,412.46x = 440,649.99 × 210,375.93
  4. Step 4: Simplify right side
    319,412.46x = 92,702,151,450.74
  5. Step 5: Solve for x
    x = 92,702,151,450.74/319,412.46
  6. Step 6: Final answer
    x = 290,227.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.