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Finding the Fourth Proportional to 418,685.65, 577,540.22 and 263,389.97

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Solution

The fourth proportional to 418,685.65, 577,540.22 and 263,389.97 is: 363,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,685.65 : 577,540.22 = 263,389.97 : x
  2. Step 2: Convert to fraction form
    418,685.65/577,540.22 = 263,389.97/x
  3. Step 3: Cross multiply
    418,685.65x = 577,540.22 × 263,389.97
  4. Step 4: Simplify right side
    418,685.65x = 152,118,301,346.49
  5. Step 5: Solve for x
    x = 152,118,301,346.49/418,685.65
  6. Step 6: Final answer
    x = 363,323.42

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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.