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Finding the Fourth Proportional to 430,956.71, 646,218.79 and 251,100.26

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Solution

The fourth proportional to 430,956.71, 646,218.79 and 251,100.26 is: 376,524.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,956.71 : 646,218.79 = 251,100.26 : x
  2. Step 2: Convert to fraction form
    430,956.71/646,218.79 = 251,100.26/x
  3. Step 3: Cross multiply
    430,956.71x = 646,218.79 × 251,100.26
  4. Step 4: Simplify right side
    430,956.71x = 162,265,702,327.04
  5. Step 5: Solve for x
    x = 162,265,702,327.04/430,956.71
  6. Step 6: Final answer
    x = 376,524.37

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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.